Alternatives to Extism
Compare Extism alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Extism in 2025. Compare features, ratings, user reviews, pricing, and more from Extism competitors and alternatives in order to make an informed decision for your business.
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1
AssemblyScript
The AssemblyScript Project
A TypeScript-like language for WebAssembly. AssemblyScript targets WebAssembly's feature set specifically, giving developers low-level control over their code. Its similarity with TypeScript makes it easy to compile to WebAssembly without learning a new language. Integrates with the existing Web ecosystem - no heavy toolchains to set up. Simply npm install it! AssemblyScript is free and open source software released under the Apache License, Version 2.0, builds upon Binaryen and is based on the WebAssembly specification. It is brought to you by the following awesome people:Starting Price: Free -
2
Deno
Deno
Deno is a simple, modern and secure runtime for JavaScript, TypeScript, and WebAssembly that uses V8 and is built in Rust. Deno comes with a manual which contains more in depth explanations about the more complex functions of the runtime, an introduction to the concepts that Deno is built on, details about the internals of Deno, how to embed Deno in your own application and how to extend Deno using Rust plugins. Next to the Deno runtime, Deno also provides a list of audited standard modules that are reviewed by the Deno maintainers and are guaranteed to work with a specific Deno version. These live in the denoland/deno_std repository.Starting Price: Free -
3
Nakama
Heroic Labs
Nakama is an open source game server framework developed by Heroic Labs, designed to facilitate the creation of real-time, multiplayer, and social games across various platforms, including Godot, Unity, Unreal Engine, and more. It provides a comprehensive suite of features such as real-time multiplayer capabilities, customizable matchmaking algorithms, leaderboards, in-game chat, and support for in-game currencies. Developers can extend Nakama's functionality using server-side logic written in Go, TypeScript, or Lua, allowing for authoritative game mechanics and enhanced control over game state. The platform also offers open-source client libraries tailored for different game engines and languages, ensuring seamless integration and flexibility in game development. Nakama is your dedicated server, not another multi-tenant SaaS. Add custom features and secure authoritative gameplay logic directly to your game server.Starting Price: Free -
4
Rio Terminal
Rio Terminal
Rio is a terminal application that’s built with Rust, WebGPU, Tokio runtime. It targets to have the best frame per second experience as long you want, but is also configurable to use as minimal from GPU. The terminal renderer is based on redux state machine, lines that has not updated will not suffer a redraw. Looking for the minimal rendering process in most of the time. Rio is also designed to support WebAssembly runtime so in the future you will be able to define how a tab system will work with a WASM plugin written in your favorite language. Rio uses WGPU, which is an implementation of WebGPU for use outside of a browser and as backend for Firefox’s WebGPU implementation. WebGPU allows for more efficient usage of modern GPU’s than WebGL. -
5
WebAssembly
WebAssembly
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. The Wasm stack machine is designed to be encoded in a size- and load-time-efficient binary format. WebAssembly aims to execute at native speed by taking advantage of common hardware capabilities available on a wide range of platforms. WebAssembly describes a memory-safe, sandboxed execution environment that may even be implemented inside existing JavaScript virtual machines. When embedded in the web, WebAssembly will enforce the same-origin and permissions security policies of the browser. WebAssembly is designed to be pretty-printed in a textual format for debugging, testing, experimenting, optimizing, learning, teaching, and writing programs by hand. The textual format will be used when viewing the source of Wasm modules on the web.Starting Price: Free -
6
Cocos Creator
Cocos
Cocos Creator is an efficient, lightweight, open source, cross-platform graphics engine and real-time interactive 2D and 3D digital content creation platform. It is not only flawless for 2D and 3D game development, but also provides integral solutions for automotive, XR, Metaverse, and education. The engine offers high performance, low power consumption, streaming loading, and cross-platform publishing capabilities. Cocos Creator features an all-in-one editor designed for artists, game planners, and developers, a powerful plug-in system for free expansion, a smooth animation editor, and an easy-to-use and easy-to-debug TypeScript scripting language. It supports full coverage of various platforms, providing friendly and professional tools to create virtual worlds. The platform also offers solutions for virtual character creation, industrial simulation, interactive marketing, XR content creation, gaming, and smart digital cockpits. -
7
Zellij
Zellij
Zellij is a workspace aimed at developers, ops-oriented people, and terminal enthusiasts, designed around the philosophy that one must not sacrifice simplicity for power, delivering a great out-of-the-box experience together with advanced features. Geared toward both beginners and power users, it offers deep customizability and personal automation through layouts, true multiplayer collaboration, unique UX elements such as floating and stacked panes, and an innovative resizing algorithm that automatically places new panes in the optimal location. A plugin system enables creation of custom pane types in any language compiling to WebAssembly, while a comprehensive CLI introduces Command Panes for running and rerunning commands in dedicated panes and provides actions like run, edit, and rename-pane. Zellij’s single-process core ensures responsive performance, and its batteries-included approach gives users a terminal workspace with everything needed for modern development workflows.Starting Price: Free -
8
Fermyon
Fermyon
Fermyon greatly reduces the hassle, complexity, and cost of building cloud applications by offering a complete WebAssembly-based execution environment with an associated easy-to-use web interface. Build and run microservices and web applications with WebAssembly. Get up and running within minutes with the Spin CLI. Easily compose apps from functions & components with Spin. Powerful versioning and release management with Bindle. Manage auto deploys and view logs through the web dashboard. Seamlessly run your WebAssembly services & containers side by side. We are building open-source, WebAssembly-powered cloud tools, with the aim of simplifying and unlocking new technologies for all. You can rapidly compose and run web apps and microservices with startup times measured in milliseconds instead of seconds, scale up or down almost instantly and execute in a secure, sandboxed environment. A faster, lighter way to run your services in the cloud, and to harness the power of WebAssembly. -
9
Modsurfer
Dylibso
Modsurfer provides ops & dev teams with the first system-of-record and diagnostics application to search, browse, validate, audit, and investigate WebAssembly binaries. At-a-glance insights into WebAssembly module data (code size & complexity, imports/exports & more). Search for details about modules (hash, ID, function names, strings, namespaces, errors & more). Easily audit and track all the WebAssembly code in your stack. Debug & triage issues otherwise difficult to pinpoint in opaque WebAssembly format. Write or generate a "check file" to track binary requirements. If a module fails validation, a helpful report is created to get things back on track. Validate your modules for import/export existence, function signature, security compliance, runtime complexity, & more. The CLI puts all your Modsurfer data at your fingertips and is the easiest way to interact with the Modsurfer desktop or enterprise server.Starting Price: Free -
10
t3rn
t3rn
t3rn creates frictionless multichain smart contract execution that's accountable, scalable, and completely trust-free for investors, users, and developers. t3rn intelligently supports the interoperable systems that the multichain future will be built on by working intelligently with any multichain transaction. t3rn smart contract hubs have built-in fail-safes that reverse failed transactions to their last secure point, ensuring that funds aren't lost. Open-source code deployed with full on-chain provenance, allowing original authors to get paid every time their code executes. Defi should never be limited to one blockchain, t3rn makes multichain DeFi possible. Anyone can use the smart contracts stored in our open-source registry or get paid whenever a smart contract you upload is used. Smart contracts can be uploaded as they are, in familiar languages like Solidity, ink!, WebAssembly, or anything that compiles to WASM. -
11
Refraction
Refraction
Refraction is a code-generation tool for developers. It uses AI to generate code for you. You can use it to generate unit tests, documentation, refactor code, and more. Generate code using AI in 34 languages — Assembly, C#, C++, CoffeeScript, CSS, Dart, Elixir, Erlang, Go, GraphQL, Groovy, Haskell, HTML, Java, JavaScript, Kotlin, LaTeX, Less, Lua, MatLab, Objective-C, OCaml, Perl, PHP, Python, R Lang, Ruby, Rust, Sass / SCSS, Scala, Shell, SQL, Swift, and TypeScript. Join thousands of developers around the world using Refraction to generate documentation, create unit tests, refactor code, and more using AI. Use the power of AI to automate the tedious parts of software development like testing, documentation, and refactoring, so you can focus on what matters. Refactor, optimize, fix and style-check your code. Generate unit tests for your code with various test frameworks. Explain the purpose of your code to make it easier to understand.Starting Price: $8 per month -
12
Elements
Namazu Studios
Namazu Studios is powered by Elements, an open-source backend server and live-ops platform designed specifically for game studios. Elements enables developers to build scalable infrastructure for online multiplayer games with ease, offering a truly extensible game engine. With a focus on simplifying backend management, Elements streamlines the complexities of game development by providing a flexible, scalable solution that allows studios to focus on creating engaging game experiences. The platform is designed for both seasoned developers and newcomers, offering a user-friendly interface to manage critical game operations without the need for extensive backend coding. -
13
Zed
Zed Industries
Zed is a next-generation code editor designed for high-performance collaboration with humans and AI. Written from scratch in Rust to efficiently leverage multiple CPU cores and your GPU. Integrate upcoming LLMs into your workflow to generate, transform, and analyze code. Chat with teammates, write notes together, and share your screen and project. Multibuffers compose excerpts from across the codebase in one editable surface. Evaluate code inline via Jupyter runtimes and collaboratively edit notebooks. Support for many languages via Tree-sitter, WebAssembly, and the Language Server Protocol. Fast native terminal tightly integrates with Zed's language-aware task runner and AI capabilities. First-class modal editing via Vim bindings, including features like text objects and marks. Zed is built by a global community of thousands of developers. Boost your Zed experience by choosing from hundreds of extensions that broaden language support, offer different themes, and more.Starting Price: Free -
14
Solar2D
Solar2D
Solar2D is a Lua-based game engine focused on ease of iterations and usage. As a fully open-source project forked from the well-established and widely used Corona SDK game engine, Solar2D allows developers to create applications for mobile, desktop, and connected TV devices with a single codebase, supporting platforms such as iOS, tvOS, Android, Android TV, macOS, Windows, Linux, and HTML5. The engine features an instant-update simulator, enabling developers to see code changes in real time, and supports live builds for rapid testing on real devices over a local network. A vast array of plugins is available to extend the core functionality, covering aspects like in-app advertising, analytics, and media. For additional customization, developers can call any native (C/C++/Obj-C/Java) library or API using Solar2D Native. Built on the lightweight and fast Lua scripting language, Solar2D is completely free to use, with no hidden fees, charges, or royalties.Starting Price: Free -
15
AWS GameKit
Amazon
Use AWS CloudFormation templates to power backend game features. Deliver core functionality to your players using prebuilt AWS solutions. Use sample assets and code to rapidly develop game feature prototypes. AWS GameKit is a game engine integration toolkit that helps you create cloud-connected game features without the learning curve of using cloud service architecture. Quickly start prototyping active game projects with ready-to-use backend game features, open-source code, and documentation. Use solutions built by cloud architecture experts, based on the AWS Well-Architected Framework, that are secure, high-performing, and resilient. Use the AWS GameKit plugin in your game engine to configure and deploy supporting AWS resources for your cloud-based game features. Use AWS tools to monitor, scale, and customize backend services, and control your data generated and stored on AWS. -
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IBM CICS
IBM
IBM® CICS® Transaction Server for z/OS® has evolved into a powerful mixed language application server, enabling developers to write and modernize applications using the languages and tools best suited to business needs and their skills. Supported languages and frameworks include Java®-based OSGi, Springboot®, Jakarta® EE, Eclipse® MicroProfile, and Node.js®-based runtime for JavaScript and TypeScript, and COBOL, C/C++, and PL/I. CICS is able to scale applications to support high-transaction workloads in a secure, robust, cost-efficient environment. Develop new applications or extend existing, mission-critical services with new interfaces. Unleash your creativity with our support for a wealth of different programming languages. Develop in CICS Transaction Server just as you would develop any other application, with plug-ins for familiar tooling such as Maven®, Gradle®, Zowe®, and UrbanCode Deploy®. -
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Wasmer
Wasmer
Create apps that run everywhere, publish, share with the community, and deploy to the edge, globally. Serve sandboxed WebAssembly apps anywhere through a single runtime and do in days what others do in months. Using a binary for each platform and chip is the past. Rise above with lightweight containerized apps that simply run everywhere. Supports almost every programming language. Truly universal, runs everywhere & fast as native. Packages are limited by their languages no more. Collaborate across stacks, leverage the ecosystem, and contribute your own packages. Get the scalability of serverless and the reusability of the cloud. Deploy to the edge, save your users time and yourself money. Faster, affordable & indefinitely scalable. All languages are fully containerized & collaborative. Plug your own backend, compiler, or runner. Run apps at close to native speed and outperform the competition. -
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Gideros
Gideros
Gideros is a free and open-source cross-platform game development framework that enables developers to create high-performance 2D games using the Lua programming language. It offers instant testing on real devices through Wi-Fi, eliminating the need for lengthy export or deployment processes. Built on C/C++ and OpenGL, Gideros ensures that games run at native speed, fully utilizing the power of CPUs and GPUs. The framework supports easy extension through plugins, allowing developers to import existing code in C, C++, Java, or Objective-C and bind it to Lua. Gideros provides its own class system with standard object-oriented programming practices, enabling clean and reusable code. The comprehensive development environment includes a lightweight IDE, players for desktops and devices, a texture packer, and a font creator. Gideros supports multiple platforms, including Windows, macOS, Linux, iOS, Android, and HTML5.Starting Price: Free -
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BoxLang
BoxLang
BoxLang is a modern, dynamically and loosely typed scripting language for the Java Virtual Machine (JVM) that supports Object-Oriented (OO) and Functional Programming (FP) constructs. It can be deployed on multiple platforms and all operating systems, web servers, Java application servers, AWS Lambda, WebAssembly, and more. BoxLang combines many features from different programming languages to provide developers with a modern, fluent, and expressive syntax. BoxLang has been designed to be a highly modular and dynamic language that takes advantage of all the modern features of the JVM. It is dynamically typed, which means there's no need to declare types. It can perform type inference, auto-casting, and promotions between different types. The language adjusts to its deployed runtime and can add, remove, or modify methods and properties at runtime. -
20
Ring
Ring
The Ring is a practical general-purpose multi-paradigm language. The supported programming paradigms are imperative, procedural, object-oriented, declarative using nested structures, functional, meta programming and natural programming. The language is portable (Windows, Linux, macOS, Android, WebAssembly, etc.) and can be used to create Console, GUI, Web, Games and Mobile applications. The language is designed to be simple, small and flexible. The language is simple, trying to be natural, encourage organization and comes with transparent and visual implementation. It comes with compact syntax and a group of features that enable the programmer to create natural interfaces and declarative domain-specific languages in a fraction of time. It is very small, flexible and comes with smart garbage collector that puts the memory under the programmer control. It supports many programming paradigms, comes with useful and practical libraries.Starting Price: Free -
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pygame
pygame
Pygame is a set of Python modules designed for writing video games. Pygame adds functionality on top of the excellent SDL library. This allows you to create fully featured games and multimedia programs in the python language. Pygame is highly portable and runs on nearly every platform and operating system. Pygame is free. Released under the LGPL license, you can create open-source, freeware, shareware, and commercial games with it. With dual-core CPUs common, and 8-core CPUs cheaply available on desktop systems, making use of multi-core CPUs allows you to do more in your game. Selected pygame functions release the dreaded python GIL, which is something you can do from C code. Uses optimized C and assembly code for core functions. C code is often 10-20 times faster than python code, and assembly code can easily be 100x or more times faster than python code. Comes with many operating systems. Just an apt-get, emerge, pkg_add, or just install away.Starting Price: Free -
22
Casbin
Casbin
Casbin is an open-source authorization library that supports various access control models, including Access Control Lists (ACL), Role-Based Access Control (RBAC), and Attribute-Based Access Control (ABAC). It is implemented in multiple programming languages such as Golang, Java, C/C++, Node.js, JavaScript, PHP, Laravel, Python, .NET (C#), Delphi, Rust, Ruby, Swift (Objective-C), Lua (OpenResty), Dart (Flutter), and Elixir, providing a consistent API across different platforms. Casbin abstracts access control models into configuration files based on the PERM metamodel, allowing developers to switch or upgrade authorization mechanisms by simply modifying configurations. It offers flexible policy storage options, supporting various databases like MySQL, PostgreSQL, Oracle, MongoDB, Redis, and AWS S3. The library also features a role manager to handle RBAC role hierarchies and supports filtered policy management for efficient enforcement.Starting Price: Free -
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Visual Basic
Microsoft
Visual Basic is an object-oriented programming language developed by Microsoft. Using Visual Basic makes it fast and easy to create type-safe .NET apps. Visual Basic focuses on supplying more of the features of the Visual Basic Runtime (microsoft.visualbasic.dll) to .NET Core and is the first version of Visual Basic focused on .NET Core. Many portions of the Visual Basic Runtime depend on WinForms and these will be added in a later version of Visual Basic. .NET is a free, open-source development platform for building many kinds of apps. With .NET, your code and project files look and feel the same no matter which type of app you're building. You have access to the same runtime, API, and language capabilities with each app. A Visual Basic program is built up from standard building blocks. A solution comprises one or more projects. A project in turn can contain one or more assemblies. Each assembly is compiled from one or more source files.Starting Price: Free -
24
JaCoCo
EclEmma
JaCoCo is a free code coverage library for Java, which has been created by the EclEmma team based on the lessons learned from using and integrating existing libraries for many years. The master branch of JaCoCo is automatically built and published. Due to the test-driven development approach, every build is considered fully functional. See the change history for the latest features and bug fixes. SonarQube code quality metrics of the current JaCoCo implementation are available on SonarCloud.io. Integrate JaCoCo technology with your tools. Use JaCoCo tools out of the box. Improve the implementation and add new features. There are several open-source coverage technologies for Java available. While implementing the Eclipse plug-in EclEmma the observation was that none of them are really designed for integration. Most of them are specifically fit to a particular tool (Ant tasks, command line, IDE plug-in) and do not offer a documented API that allows embedding in different contexts.Starting Price: Free -
25
Jodit
Jodit
Excellent Open Source WYSIWYG editor written in pure TypeScript without using additional libraries. Easy to use, but powerful & additional plugins & extended support & based on opens source version.Starting Price: $99 one-time payment -
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NocoBase
NocoBase
NocoBase is an extensibility-first, open source, self-hosted no-code development platform designed for developers and technical teams to rapidly build and customize complex business systems. Its architecture is data model-driven, separating the user interface from the data structure, allowing for the creation of multiple blocks and actions for the same table and record in any quantity and form. NocoBase supports main databases, external databases, and third-party APIs as data sources. It features a WYSIWYG interface with a one-click switch between usage and configuration modes, enabling users to compose suitable interfaces much like Notion. All functionalities are implemented as plugins using a microkernel architecture, allowing for extensive customization, including pages, blocks, actions, APIs, and data sources. NocoBase is written in TypeScript and utilizes mainstream technology stacks such as Node.js and React, ensuring transparency and control.Starting Price: $800 per year -
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Apache Geronimo
Apache
Apache Geronimo is an open-source set of projects that are focused on providing JavaEE/JakartaEE libraries and Microprofile implementations. We are actively delivering reusable Java EE components though. They are widely used and still actively maintained! Apache Geronimo provides libraries for the implementations of the Java EE and Jakarta EE specifications. The implementations are also focused on providing OSGi bundle metadata. The goal of XBean project is to create a plugin-based server analogous to Eclipse is a plugin-based IDE. XBean will be able to discover, download and install server plugins from an Internet-based repository. In addition, we include support for multiple IoC systems, support for running with no IoC system, JMX without JMX code, lifecycle and class loader management, and rock-solid Spring integration. Apache Geronimo hosts several Microprofile implementations. Apache Geronimo Arthur is an effort to build a thin layer on top of Oracle GraalVM.Starting Price: Free -
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Lapce
Lapdev
Lapce is a cutting-edge, open-source code editor focused on delivering a fast and responsive experience, particularly for developers working with large projects or complex codebases. Written in Rust, Lapce leverages the performance advantages of native development to provide a smooth editing experience with minimal lag. It features a clean, modern interface and advanced functionality such as multi-caret editing, split views, and integrated terminal support. With built-in support for the Language Server Protocol (LSP), Lapce offers precise autocompletion, syntax highlighting, and code navigation across various programming languages, enhancing productivity. Its extensibility, support for plugins, and focus on performance make Lapce ideal for developers looking for a lightweight yet powerful editor that balances simplicity with capability, appealing to both beginners and seasoned professionals.Starting Price: Free -
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PyMOL
PyMOL
PyMOL is a user-sponsored molecular visualization system on an open-source foundation, maintained and distributed by Schrödinger. PyQt interface replaces Tcl/Tk and MacPyMOL on all platforms. Better third-party plugin and custom scripting support. A comprehensive software package for rendering and animating 3D structures. A plug-in for embedding 3D images and animations into PowerPoint presentations. PyMOL is a commercial product, but we make most of its source code freely available under a permissive license. The open-source project is maintained by Schrödinger and ultimately funded by everyone who purchases a PyMOL license. Open access incentive executables. Liberal evaluation policy. Improved fuse command (disallows hypervalent bonds, substitutes monovalent atoms instead of attaching to them) Properties inspector now supports unsetting settings with the “delete” key. Fix workspace disappearing on specific display resolutions. -
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Mono
Mono
Cross-platform, open source .NET framework. Sponsored by Microsoft, Mono is an open-source implementation of Microsoft's .NET Framework as part of the .NET Foundation and based on the ECMA standards for C# and the common language runtime. A growing family of solutions and an active and enthusiastic contributing community is helping position Mono to become the leading choice for the development of cross-platform applications. The latest Mono release is waiting for you. We cover everything you need to know, from configuring Mono to how the internals are implemented. Our documentation is open source too, so you can help us improve it. As an open-source project, we love getting contributions from the community. File a bug report, add new code or chat with the developers. Mono is a software platform designed to allow developers to easily create cross-platform applications.Starting Price: Free -
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Biome
Biome
Biome is a comprehensive toolchain for web projects, offering high-performance formatting and linting capabilities for languages such as JavaScript, TypeScript, JSX, TSX, JSON, CSS, and GraphQL. Its formatter achieves 97% compatibility with Prettier, enabling rapid code formatting that can handle malformed code in real time within various editors. The linter incorporates over 270 rules from ESLint, TypeScript ESLint, and other sources, providing detailed, contextual diagnostics to assist developers in enhancing code quality and adhering to best practices. Built with Rust, Biome ensures exceptional speed and efficiency, capable of formatting extensive codebases significantly faster than comparable tools. It is designed for seamless integration into development environments, offering a unified solution for code formatting and linting without the need for extensive configuration. Designed to handle codebases of any size. Focus on growing products instead of your tools. -
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WebContainers
WebContainers
WebContainers, developed by StackBlitz, are a browser-based runtime environment that enables the execution of Node.js applications and operating system commands directly within a web browser tab. This technology allows developers to build instant, interactive coding experiences, from tutorials to full-fledged integrated development environments, without the need for local setups or cloud-based virtual machines. By running entirely client-side, WebContainers offer unmatched user experiences with zero latency, offline capabilities, and enhanced security, as they eliminate the risks associated with server-side code execution. They support native Node.js toolchains, including npm, pnpm, and yarn, and are compatible with major modern frameworks. Additionally, WebContainers facilitate the running of WebAssembly (Wasm) out of the box, allowing for the porting of various languages and frameworks to the browser environment.Starting Price: $18 per month -
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MonoGame
MonoGame
MonoGame is a free and open-source framework that allows developers to create cross-platform games using C# and other .NET languages. It supports multiple platforms, including Windows, macOS, Linux, Android, iOS, PlayStation 4, PlayStation 5, Xbox One, and Nintendo Switch. MonoGame provides a comprehensive set of features, such as 2D and 3D rendering, sound playback, input handling, and content management, enabling the development of high-quality games across various genres. The framework is a re-implementation of Microsoft's XNA 4 API, ensuring familiarity for developers with XNA experience. Notable games developed with MonoGame include "Streets of Rage 4," "Carrion," "Celeste," and "Stardew Valley." MonoGame is actively maintained by the MonoGame Foundation and its community, with ongoing updates and support.Starting Price: Free -
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Eclipse Web Tools Platform (WTP)
Eclipse Foundation
The Eclipse Web Tools Platform (WTP) project extends the Eclipse platform with tools for developing Web and Java EE applications. It includes source and graphical editors for a variety of languages, wizards and built-in applications to simplify development, and tools and APIs to support deploying, running, and testing apps. The Libra project integrates the existing tooling provided by the Plug-in Development Environment project and the Web Tools Platform project to work together for implementing OSGi Enterprise scenarios. The JavaScript Development Tools provide plug-ins that implement an IDE supporting the development of JavaScript applications and JavaScript within web applications. It adds a JavaScript project type and perspective to the Eclipse Workbench as well as a number of views, editors, wizards, and builders. -
35
Nitric
Nitric
Nitric is an open source, cloud-agnostic backend framework that enables developers to declare infrastructure as code and automate deployments using pluggable plugins. It supports multiple languages, including JavaScript, TypeScript, Python, Go, and Dart. Key features include defining APIs (REST, HTTP), serverless functions, routing, authentication/authorization (OIDC-compatible), storage (object/file storage, signed URLs, bucket events), databases (e.g., managed Postgres with migrations), messaging (queues, topics, pub/sub), websockets, scheduled tasks, and secrets management. Nitric integrates with tools like Terraform or Pulumi, or lets you write your own plugins, and works with major cloud providers (AWS, Azure, Google Cloud). It also supports local development with simulated cloud environments so you can prototype, test, and iterate without incurring cloud cost. The framework emphasizes declarative security, resource access management, and portability.Starting Price: Free -
36
Siberian CMS
Siberian CMS
Smooth Open-Source CMS. Zero coding knowledge is required. iOS, Android and Webapp were created in just one go. Siberian is an open-source CMS. You are not renting an online platform, the software is yours, the apps you create are yours. You add value to your company by adding an asset to it. Also, you can transfer to your clients the rights on their apps. Allow users to book a seat, a slot, a table or anything you want, with an easy and multi-stores plug-in. The form is sent to the right store following the user's validation. Manage your appointments like a pro. It's now possible to add a complete appointment engine in your app and to manage multiple stores, services and providers from one place. You will also be able to set working hours for these stores, holidays slots and everything you would need to manage your appointments in the blink of an eye.Starting Price: €349 per month -
37
ForkDelta
ForkDelta
ForkDelta is a decentralized Ethereum Token Exchange with the most ERC20 listings of any exchange. ForkDelta currently acts as an open-source, updated interface for EtherDelta's smart contract with an active and public development team. A decentralized exchange is an exchange that doesn't rely on a centralized party to store user's funds and facilitate trades. In ForkDelta's case, funds are stored in a smart contract hosted on the Ethereum network. Trades also occur directly between users using the same smart contract. ForkDelta prides itself on being an open, fair community with developers who are easily accessed and an open-source codebase. At ForkDelta, we believe in direct and open streams of communication with the community. ForkDelta does not and will not ever charge fees for token listings. ForkDelta also lists the most tokens of any exchange with new tokens added every day. -
38
Flyde
Flyde
Built on a functional-reactive foundation, Flyde enables more than simple input/output flows. It supports everything you'd expect from a textual-based language; recursions, loops, and conditionals. Unlock new ways to think about, and debug your programs. Have an always-correct diagram of your program. Flyde’s flow-based, visual approach makes asynchronous and concurrent tasks simpler and more intuitive. In Flyde, nothing is hidden. From node implementation to runtime code. Easily access the code behind each node in Flyde’s standard library. Everything needed to run Flyde flows is open source and MIT-licensed. Create Flyde flows right from your IDE. Wrap existing TypeScript code in a Flyde node and use it in your flows. Run flows from existing TypeScript code, from arbitrary CLI scripts to HTTP request handlers, and even front-end code. Flows can be version-controlled, and be part of CI/CD pipelines, just like regular text-based code.Starting Price: Free -
39
ispCP
ispCP
ispCP (Internet Service Provider Control Panel) is an open-source project founded to build a multi-server control and administration panel. The ispCP Omega release is completely based on the original open-source VHCS project. All new code, and submissions to ispCP Omega are licensed under the GNU General Public License (V2). Rather than start a project from scratch, the team searched for existing open-source implementations and decided to fork the dying virtual hosting control panel (VHCS) project. This community effort to continue on the work of VHCS lead to the creation of ispCP Omega. The ispCP Omega release is completely based on the original open-source VHCS project. Because part of the ispCP dev team were core members of the dead VHCS project, Malte (ephigenie) and Benedikt (RatS) felt an obligation to offer the desperate community a way to migrate to ispCP. This led to the creation of ispCP Omega, a migration path from VHCS to ispCP. -
40
ActiveState
ActiveState
ActiveState delivers Intelligent Remediation for vulnerability management, which enables DevSecOps teams to not only identify vulnerabilities in open source packages, but also to automatically prioritize, remediate, and deploy fixes into production without breaking changes, ensuring that applications are truly secured. Existing tools overwhelm DevSecOps teams with excessive vulnerability data, false positives, and a lack of prioritization, often leading to inaction and increased exposure to exploits. ActiveState’s solution provides your DevSecOps with a comprehensive view of open source vulnerability status across your application portfolio, enabling them to prioritize the vulnerabilities that matter, assess the risk of updates, and choose recommended remediation paths. The ActiveState platform centers on open source languages packaged as runtimes that can be deployed in various form factors. Low-to-no CVE container images are also available for plug-in and play needs. -
41
Pale Moon
Pale Moon
Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux (with other operating systems in development), focusing on efficiency and customization. Make sure to get the most out of your browser! Pale Moon offers you a browsing experience in a browser completely built from its own, independently developed source that has been forked off from Firefox/Mozilla code a number of years ago, with carefully selected features and optimizations to improve the browser's stability and user experience, while offering full customization and a growing collection of extensions and themes to make the browser truly your own. This browser, even though fairly close to Gecko-based browsers like Mozilla Firefox and SeaMonkey in the way it works, is based on a different layout engine and offers a different set of features. It aims to provide close adherence to a balanced set of official, common-sense web standards and specifications in its implementation. -
42
ADAPT
AgGateway
Tools to simplify communication between growers, their machines, and their partners. It is the product of several years of work by more than a dozen companies and experts collaborating through AgGateway. The ADAPT framework is comprised of an agricultural application data model, a common API (Application Programming Interface), and a combination of open source and proprietary data conversion plug-ins. Participating FMIS (Farm Management Information System) companies are responsible for completing their own implementation of mapping the agricultural application data model to their FMIS data model. It features plug-in libraries that allow the farm management software to convert to and from the common object model and different file formats. -
43
Metatable
Metatable
Metatable.ai is an AI-driven development platform that accelerates the creation and deployment of web and mobile applications. It offers an AI assistant to help define technical requirements, automatically generating and verifying frontend and backend code. It provides secure, scalable infrastructure, enabling one-click deployment and seamless integration with tools like Firebase, GitHub, Stripe, and Slack. Metatable.ai supports customization and scalability, allowing businesses to tailor software solutions to their specific needs. Leveraging Rust and WebAssembly, Metatable.ai ensures high performance and security. It also includes built-in authorization, authentication, and database management features, streamlining the development process. With Metatable.ai, users can transform ideas into minimum viable products in under 60 minutes, significantly reducing development time and costs. Starting Price: $25 per month -
44
Continue
Continue
The leading open-source AI code assistant. You can connect any models and any context to create custom autocomplete and chat experiences inside the IDE Remain in flow while coding by removing the barriers that block productivity when building software. Accelerate development with a plug-and-play system that makes it easy to get started and integrates with your entire stack. Become a leader in AI by setting up your code assistant to evolve as new capabilities emerge. Continue autocompletes single lines or entire sections of code in any programming language as you type. Attach code or other context to ask questions about functions, files, the entire codebase, and more. Highlight code sections and press a keyboard shortcut to rewrite code from natural language.Starting Price: $0/developer/month -
45
QGIS
QGIS
Create, edit, visualize, analyze and publish geospatial information on Windows, Mac, Linux, BSD and mobile devices. For your desktop, server, in your web browser and as developer libraries. QGIS is a user-friendly open-source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities. QGIS provides a continously growing number of capabilities provided by core functions and plugins. You can visualize, manage, edit, analyze data, and compose printable maps. We also collect case studies of how people all over the world use QGIS for their GIS work. You can view combinations of vector and raster data (in 2D or 3D) in different formats and projections without conversion to an internal or common format. -
46
Blazor
Microsoft
Blazor lets you build interactive web UIs using C# instead of JavaScript. Blazor apps are composed of reusable web UI components implemented using C#, HTML, and CSS. Both client and server code is written in C#, allowing you to share code and libraries. Blazor is a feature of ASP.NET, the popular web development framework that extends the .NET developer platform with tools and libraries for building web apps. Blazor can run your client-side C# code directly in the browser, using WebAssembly. Because it's real .NET running on WebAssembly, you can re-use code and libraries from server-side parts of your application. Alternatively, Blazor can run your client logic on the server. Client UI events are sent back to the server using SignalR - a real-time messaging framework. Once execution completes, the required UI changes are sent to the client and merged into the DOM.Starting Price: Free -
47
ASP.NET
Microsoft
Blazor is a feature of ASP.NET for building interactive web UIs using C# instead of JavaScript. Blazor gives you real .NET running in the browser on WebAssembly. .NET is a developer platform made up of tools, programming languages, and libraries for building many different types of applications. ASP.NET supports industry standard authentication protocols. Built-in features help protect your apps against cross-site scripting (XSS) and cross-site request forgery (CSRF). ASP.NET provides a built-in user database with support for multi-factor authentication and external authentication with Google, Twitter, and more.Starting Price: Free -
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LÖVE
Love2D
As you probably know by now, LÖVE is a framework for making 2D games in the Lua programming language. LÖVE is totally free, and can be used in anything from friendly open-source hobby projects, to evil, closed-source commercial ones. To make a minimal game, create a folder anywhere, and open up your favorite text editor. Sublime Text is a pretty good one for all operating systems, and it has Lua support built in. Create a new file in the folder you just created, and name it main.lua. Put the following code in the file, and save it.Starting Price: Free -
49
Redmineflux
Redmineflux
Redmineflux is a comprehensive project management solution and an extension of the open-source Redmine, which includes over 18 plugins and 2 themes to enhance Redmine's core capabilities. -
50
Tamanu
Beyond Essential Systems
Tamanu is a free and open-source EHR for low-resource and remote settings. Built around five fundamental principles outlined below, users also experience ongoing, active software development by a dedicated, full-stack team. Highly experienced delivery team, zero cost licensing, with optional service level agreements. An international community of support, and an intuitive, modern, flexible interface. Contribute to the global development community, with the security of no one ‘owning’ your code. Out-of-the-box for inpatients, outpatients, and community, no 3rd-party plug-ins needed. HL7 FHIR is compliant. Integrates with mSupply, mSupply Mobile, Tupaia, and DHIS2. ICD-10, GS1 compatible. Work online or offline with no limits, syncing whenever the internet is available, and no latency. Industry-standard encryption protocols, powerful security features, fit-for-purpose. At the hospital level, a desktop-enabled version allows a full suite of functionality.Starting Price: $35 per month