Alternatives to Javalin
Compare Javalin alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Javalin in 2025. Compare features, ratings, user reviews, pricing, and more from Javalin competitors and alternatives in order to make an informed decision for your business.
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1
Ktor
JetBrains
Create asynchronous client and server applications. Anything from microservices to multiplatform HTTP client apps in a simple way. Open Source, free, and fun! Ktor is built from the ground up using Kotlin and Coroutines. You get to use a concise, multiplatform language, as well as the power of asynchronous programming with an intuitive imperative flow. Ktor allows you to use only what you need, and to structure your application the way you need it. In addition, you can also extend Ktor with your own plugin very easily. Brought to you by JetBrains, creators of IntelliJ IDEA, Kotlin, and more. Ktor is not only used by our customers but also internally at JetBrains. In addition, you have top-notch tooling support! -
2
Jersey
Eclipse Foundation
Developing RESTful web services that seamlessly support exposing your data in a variety of representation media types and abstracting away the low-level details of client-server communication is not an easy task without a good toolkit. In order to simplify the development of RESTful web services and their clients in Java, a standard and portable JAX-RS API has been designed. Jersey RESTful web services 3. x framework is an open-source, production-quality, framework that provides support for Jakarta RESTful web services 3.0. Jersey framework is more than the JAX-RS reference implementation. Jersey provides its own API that extends the JAX-RS toolkit with additional features. Track the JAX-RS API and provide regular releases of production quality reference implementations that ship with GlassFish. Provides APIs to extend Jersey & build a community of users and developers. Makes it easy to build RESTful Web services utilizing Java and the Java Virtual Machine.Starting Price: Free -
3
Bottle
Bottle
Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library. Requests to function-call mapping with support for clean and dynamic URLs. Fast and pythonic built-in template engine and support for mako, jinja2 and cheetah templates. Convenient access to form data, file uploads, cookies, headers and other HTTP-related metadata. Built-in HTTP development server and support for paste, bjoern, gae, cherrypy or any other WSGI capable HTTP server. -
4
hug
hug
Drastically simplify API development over multiple interfaces. With hug, design and develop your API once, then expose it however your clients need to consume it. Be it locally, over HTTP, or through the command line - hug is the fastest and most modern way to create APIs on Python3. hug has been built from the ground up with performance in mind. It is built to consume resources only when necessary and is then compiled with Cython to achieve amazing performance. As a result, hug consistently benchmarks as one of the fastest Python frameworks and without question takes the crown as the fastest high-level framework for Python 3. hug makes it easy to expose multiple versions of your API. With hug you can simply specify what version or range of versions an endpoint supports and then automatically have that enforced and communicated to your API's users. -
5
Slim Framework
Slim Framework
Slim is an ideal tool to create APIs that consume, repurpose, or publish data. Slim is also a great tool for rapid prototyping. Heck, you can even build full-featured web applications with user interfaces. More importantly, Slim is super fast and has very little code. You don’t always need a kitchen-sink solution like Symfony or Laravel. These are great tools, for sure. But they are often overkill. Instead, Slim provides only a minimal set of tools that do what you need and nothing else. First, you need a web server like Nginx or Apache. A Slim app contains routes that respond to specific HTTP requests. Each route invokes a callback and returns an HTTP response. To get started, you first instantiate and configure the Slim application. Next, you define your application routes. -
6
Nancy
Nancy
Welcome to Nancy, our main inspiration is the Sinatra framework for Ruby and, hence, Nancy was named after the daughter of Frank Sinatra. NancyFx is the name of the umbrella project that contains all the components. Nancy is a lightweight, low-ceremony, framework for building HTTP-based services on .NET and Mono. The goal of the framework is to stay out of the way as much as possible and provide a super-duper-happy path to all interactions. This means that everything in Nancy is setup to have sensible defaults and conventions, instead of making you jump through hoops and go through configuration hell just to get up and running. With Nancy you can go from zero to website in a matter of minutes. Nancy is built to run anywhere and we mean it. Right from the start, Nancy was designed to not have any dependencies on existing frameworks. Built with the .NET framework client profile, Nancy can be used pretty much wherever you want to.Starting Price: Free -
7
Echo
Echo
High-performance, extensible, minimalist Go web framework. Highly optimized HTTP router with zero dynamic memory allocation which smartly prioritizes routes. Build robust and scalable RESTful API, easily organized into groups. Automatically install TLS certificates from Let's Encrypt. HTTP/2 support improves speed and provides a better user experience. Many built-in middleware to use, or define your own. Middleware can be set at root, group, or route level. Data binding for HTTP request payload, including JSON, XML or form data. API to send a variety of HTTP responses, including JSON, XML, HTML, file, attachment, inline, stream, or blob. Template rendering using any template engine. Customized central HTTP error handling. Easily extendable API. Optimized HTTP router which smartly prioritizes routes. Build robust and scalable RESTful APIs. Extensible middleware framework. Define middleware at root, group, or route level Data binding for JSON, XML, and form payload.Starting Price: Free -
8
Flask
Flask
Flask is a lightweight WSGI web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications. It began as a simple wrapper around Werkzeug and Jinja and has become one of the most popular Python web application frameworks. Flask offers suggestions, but doesn't enforce any dependencies or project layout. It is up to the developer to choose the tools and libraries they want to use. There are many extensions provided by the community that make adding new functionality easy.Starting Price: Free -
9
Falcon
Falcon
Falcon is a blazing fast, minimalist Python web API framework for building robust app backends and microservices. The framework works great with both asyncio (ASGI) and gevent/meinheld (WSGI). The Falcon web framework encourages the REST architectural style. Resource classes implement HTTP method handlers that resolve requests and perform state transitions. Falcon complements more general Python web frameworks by providing extra reliability, flexibility, and performance wherever you need it. A number of Falcon add-ons, templates, and complementary packages are available for use in your projects. We've listed several of these on the Falcon wiki as a starting point, but you may also wish to search PyPI for additional resources. -
10
FastAPI
FastAPI
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. Fast: Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Minimize code duplication, multiple features from each parameter declaration. -
11
Sinatra
Sinatra
Sinatra includes a number of built-in settings that control whether certain features are enabled. Settings are application-level variables that are modified using one of the set, enable, or disable methods and are available within the request context via the settings object. Applications are free to set custom settings as well as the default, built-in settings provided by the framework. In its simplest form, the set method takes a setting name and value and creates an attribute on the application. Extensions provide helper or class methods for Sinatra applications. These methods are customarily listed and described on extensions home pages. Using an extension is usually as simple as installing a gem or library and requiring a file. -
12
Koa
Koa
Koa is a new web framework designed by the team behind Express, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. By leveraging async functions, Koa allows you to ditch callbacks and greatly increase error handling. Koa does not bundle any middleware within its core, and it provides an elegant suite of methods that make writing servers fast and enjoyable. A Koa application is an object containing an array of middleware functions that are composed and executed in a stack-like manner upon request. Koa is similar to many other middleware systems that you may have encountered such as Ruby's Rack, Connect, and so on - however, a key design decision was made to provide high-level "sugar" at the otherwise low-level middleware layer. This improves interoperability, and robustness, and makes writing middleware much more enjoyable.Starting Price: Free -
13
hapi
hapi
Build powerful, scalable applications, with minimal overhead and full out-of-the-box functionality, your code, your way. Developed initially to handle Walmart’s Black Friday sales, hapi continues to be the proven choice for enterprise-grade backend needs. When you install hapi, every single line of code you get has been verified. You never have to worry about some deep dependency being poorly maintained (or handed over to someone sketchy). hapi is the only leading node framework without any external code dependencies. hapi requires the most secure settings to manage, control, and distribute code, including 2FA for all contributors. Every hapi component comes with the most secure defaults out of the box. Along with protecting server load with payload limits and request timeouts, hapi blocks error messages that could leak information or echo back exploits. The most comprehensive authorization and authentication API available in a Node framework.Starting Price: Free -
14
CherryPy
CherryPy
CherryPy allows developers to build web applications in much the same way they would build any other object-oriented Python program. This results in smaller source code developed in less time. CherryPy is now more than ten years old, and it has proven to be fast and reliable. It is being used in production by many sites, from the simplest to the most demanding. In order to make the most of CherryPy, you should start with the tutorials that will lead you through the most common aspects of the framework. Once done, you will probably want to browse through the basics and advanced sections that will demonstrate how to implement certain operations. Finally, you will want to carefully read the configuration and extend sections that go in-depth regarding the powerful features provided by the framework. -
15
restify
restify
A Node.js web service framework optimized for building semantically correct RESTful web services ready for production use at scale. restify optimizes for introspection and performance and is used in some of the largest Node.js deployments on Earth. Running at scale requires tracing problems back to their origin by separating noise from the signal. restify is built from the ground up with post-mortem debugging in mind. Staying true to the spec is one of the foremost goals of the project. You will see references to RFCs littered throughout GitHub issues and the codebase. restify is used by some of the industry's most respected companies to power some of the largest deployments of Node.js on planet Earth—the future of Node.js REST development. Setting up a server is quick and easy. Like many other Node. js-based REST frameworks, restify leverages a Sinatra-style syntax for defining routes and the function handlers that service those routes.Starting Price: Free -
16
LoopBack
LoopBack
A highly extensible Node.js and TypeScript framework for building APIs and microservices. A brand new LoopBack core to deliver great extensibility and flexibility written in TypeScript/ES2017. Create powerful APIs easily with a new creative experience for defining REST APIs and handling API requests/responses. A new, improved programming model with dependency injection and new concepts such as components, mixins, repositories, etc. make this the most extensible version yet. The LoopBack 4 CLI is a command-line interface that can scaffold a project or extension. The CLI provides the fastest way to get started with a LoopBack 4 project that adheres to best practices. LoopBack is a highly-extensible, open-source Node.js framework that enables you to create dynamic end-to-end REST APIs with little or no coding. Access data from major relational databases, MongoDB, SOAP, and REST APIs. Incorporate model relationships and access controls for complex APIs. -
17
Dropwizard
Dropwizard
Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. Dropwizard pulls together stable, mature libraries from the Java ecosystem into a simple, lightweight package that lets you focus on getting things done. Dropwizard has out-of-the-box support for sophisticated configuration, application metrics, logging, operational tools, and much more, allowing you and your team to ship a production-quality web service in the shortest time possible. Dropwizard straddles the line between being a library and a framework. Its goal is to provide performant, reliable implementations of everything a production-ready web application needs. Because this functionality is extracted into a reusable library, your application remains lean and focused, reducing both time-to-market and maintenance burdens. Because you can’t be a web application without HTTP, Dropwizard uses the Jetty HTTP library to embed an incredibly tuned HTTP server directly into your project.Starting Price: Free -
18
Giotto
Giotto
It is based on the concept of Model, View and Controllers. The framework is designed to enforce a clean style that results in code that is maintainable over a long period. Other popular web frameworks are built with a mindset of launching fast. This results in code that will deploy quickly, but falls under it’s own complexity after many iterations. An example of a controller process is Apache, or gunicorn. A manifest is given to the controller process when it is started. All incoming requests to the controller process will be routed to a program contained within the manifest. A manifest is just a collection of programs. A user makes a request to the controller process. This can be a web request, or a command line invocation, or any other action that is handled by a controller process. -
19
Express
OpenJS Foundation
Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. With a myriad of HTTP utility methods and middleware at your disposal, creating a robust API is quick and easy. Express provides a thin layer of fundamental web application features, without obscuring Node.js features that you know and love. Express has no notion of a database. This concept is left up to third-party Node modules, allowing you to interface with nearly any database. In Express, 404 responses are not the result of an error, so the error-handler middleware will not capture them. This behavior is because a 404 response simply indicates the absence of additional work to do; in other words, Express has executed all middleware functions and routes, and found that none of them responded.Starting Price: Free -
20
Koin
Kotzilla
Koin simplifies DI and empowers developers in the Kotlin landscape. Koin helps you build any kind of Kotlin & Kotlin multiplatform application, from Android mobile to backend Ktor server applications. Koin is built for the most demanding apps and is trusted by developers worldwide. Koin is an open source dependency injection framework tailored for Kotlin developers. With its intuitive DSL and lightweight container, Koin simplifies dependency injection for any Kotlin application and SDK. Koin framework lets you build your dependency injection in a breeze, with simple API and Kotlin DSL. Koin can help you create complex Android mobile applications, so you can focus on your business, not your tools. Koin connects on top of the Kotlin ecosystem. Using the power of Kotlin, Koin provides easy dependency injection across multiple platforms. Already used by thousands of companies in the world, Koin is ready to scale in production.Starting Price: Free -
21
Rustless
Rustless
Rustless is a REST-like API micro-framework for Rust. It's designed to provide a simple DSL to easily develop RESTful APIs on top of the Iron web framework. It has built-in support for common conventions, including multiple formats, subdomain/prefix restriction, content negotiation, versioning, and much more. Rustless in a port of Grape library from Ruby world. Based on hyper, an HTTP library for Rust. Like Rust itself, Rustless is still in the early stages of development, so don't be surprised if APIs change and things break. If something's not working properly, file an issue or submit a pull request! Rustless is based on Iron, which is based on Hyper, which is synchronous. Hyper has a lot of limitations right now, and can't handle many simultaneous connections, especially with keep-alive. So it is highly recommended to use a light asynchronous web server such as Nginx as a reverse proxy server with Rustless.Starting Price: Free -
22
Ruby Grape
Ruby Grape
An opinionated framework for creating REST-like APIs in Ruby. -
23
Eclipse Jetty
Eclipse Foundation
Jetty provides a web server and servlet container, additionally providing support for HTTP/2, WebSocket, OSGi, JMX, JNDI, JAAS and many other integrations. These components are open source and are freely available for commercial use and distribution. Jetty is used in a wide variety of projects and products, both in development and production. Jetty has long been loved by developers due to its long history of being easily embedded in devices, tools, frameworks, application servers, and modern cloud services. Full-featured and standards-based. Open source and commercially usable, flexible and extensible, small footprint, embeddable, asynchronous, enterprise scalable, and dual-licensed under Apache and Eclipse. Large clusters, such as Facebook Presto. Cloud computing, such as Google AppEngine. With the direction of Java and the JakartaEE project (formerly JavaEE) in 2020, the current recommended version of Jetty for use depends upon the servlet API version, desired licensing, etc. -
24
Enhance
Enhance
Enhance ships with everything you need to build a production-ready app. Organize your pages as easily as a desktop folder. Access and store data with simple JavaScript functions. Build reusable components with HTML and scoped CSS. Add client-side interaction just where you need it. Build server-rendered custom elements that seamlessly upgrade to interactive web components. Enhance makes the right way the easy way. Start with a version that works everywhere for everyone. Incrementally upgrade interactive elements from there. The web platform has what you need and never goes out of fashion. Ditch throbbers and loading screens by removing framework bloat and authoring only the code you need. When you learn Enhance, you’re learning development approaches that will last as long as the web does. Enhance apps are designed with deployment in mind. When you're ready to launch, we've got you covered with Begin. -
25
Vue.js
Vue.js
Builds on top of standard HTML, CSS and JavaScript with intuitive API and world-class documentation. Truly reactive, compiler-optimized rendering system that rarely requires manual optimization. A rich, incrementally adoptable ecosystem that scales between a library and a full-featured framework. Vue is a JavaScript framework for building user interfaces. It builds on top of standard HTML, CSS and JavaScript, and provides a declarative and component-based programming model that helps you efficiently develop user interfaces, be it simple or complex. Vue extends standard HTML with a template syntax that allows us to declaratively describe HTML output based on JavaScript state. Vue automatically tracks JavaScript state changes and efficiently updates the DOM when changes happen. Vue is a framework and ecosystem that covers most of the common features needed in frontend development. -
26
Swoole
Swoole
Powering the next-generation microservices and applications. Build high-performance, scalable, concurrent TCP, UDP, Unix Socket, HTTP, GRPC services with PHP and easy-to-use coroutine, fibers API. Write your next scalable async application with PHP coroutines and fibers. Compared with other async programming frameworks or software such as Nginx, Tornado, and Node.js, Swoole is a complete async solution that has built-in support for async programming via fibers/coroutines, a range of multi-threaded I/O modules (HTTP server, GRPC, process pools) and support for popular PHP clients like PDO for MySQL, Redis, and CURL. You can use sync or async, coroutine, or fiber API to write the applications or create thousands of lightweight fibers within one Linux process. Swoole enhances the efficiency of your PHP applications and brings you out of the traditional stateless model, enabling you to focus on the development of innovative products at a high scale.Starting Price: Free -
27
Preact
Preact
Preact provides the thinnest possible Virtual DOM abstraction on top of the DOM. It builds on stable platform features, registers real event handlers and plays nicely with other libraries. Most UI frameworks are large enough to be the majority of an app's JavaScript size. Preact is different: it's small enough that your code is the largest part of your application. That means less JavaScript to download, parse and execute - leaving more time for your code, so you can build an experience you define without fighting to keep a framework under control. Preact is fast, and not just because of its size. It's one of the fastest Virtual DOM libraries out there, thanks to a simple and predictable diff implementation. We automatically batch updates and tune Preact to the extreme when it comes to performance. We work closely with browser engineers to get the maximum performance possible out of Preact.Starting Price: Free -
28
Kendo UI
Progress Software
Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applications—regardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UI’s hundreds of components handle everything you need to satisfy your users’ requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects won’t require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way they’re supposed to—guaranteed.Starting Price: $899 -
29
Webix
Webix
JavaScript UI library and framework for speeding up web development. JS Framework for cross-platform web Apps development 102 UI widgets and feature-rich CSS / HTML5 JavaScript controls. Save at least 3000+ development hours by using ready-made widgets and UI controls. Develop Web UI 30% faster. We have accumulated the best design ideas. We have meticulously considered UX of each Webix component for five conceptual designs. Our support service specialists know everything about our library and can help you solve any problem. We also have an official support forum where you can discuss issues with our developers. By using Webix JS framework you receive an elegant and lightweight code based on object-oriented programming concepts. Associate your project with jQuery JavaScript library, MVC frameworks AngularJS, React, Vue.js, Backbone.js, third party UI extensions. -
30
Helidon
Helidon
Helidon is a cloud-native, open‑source set of Java libraries for writing microservices that run on a fast web core powered by Netty. Helidon Níma is the first Java microservices framework based on virtual threads. Helidon is designed to be simple to use, with tooling and examples to get you going quickly. Since Helidon is simply a collection of Java libraries running on a fast Netty core, there is no extra overhead or bloat. Helidon supports MicroProfile and provides familiar APIs like JAX-RS, CDI, and JSON-P/B. Our implementation runs on our fast Helidon Reactive WebServer. Helidon Reactive WebServer provides a modern functional programming model and runs on top of Netty. Lightweight, flexible, and reactive, the Helidon WebServer provides a simple-to-use and fast foundation for your microservices. With support for health checks, metrics, tracing, and fault tolerance, Helidon has what you need to write cloud-ready applications that integrate with Prometheus, Jaeger/Zipkin, etc.Starting Price: Free -
31
SvelteKit
SvelteKit
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. It addresses common development challenges by providing solutions for routing, server-side rendering, data fetching, service workers, TypeScript integration, and more. SvelteKit apps are server-rendered by default, offering excellent first-load performance and SEO benefits, but can transition to client-side navigation to enhance user experience. The framework is designed to grow with developers, allowing them to start simple and add new features as needed. SvelteKit leverages Vite for a fast and feature-rich development experience, including hot module replacement. In short, Svelte is a way of writing user interface components, like a navigation bar, comment section, or contact form, that users see and interact with in their browsers. The Svelte compiler converts your components to JavaScript that can be run to render the HTML for the page and to CSS that styles the page.Starting Price: Free -
32
Aurelia
Aurelia
Aurelia's standards-based, unobtrusive style makes it the only framework that empowers you to build components using vanilla JavaScript or TypeScript. If you know modern JS and HTML, there's little more to learn to build even the most complex apps. At the core of Aurelia is a high-performance, reactive system, capable of batching DOM updates in a way that leaves other frameworks, and their virtual DOMs, in the dust. Experience consistent, scalable performance, no matter how complex your UI. Aurelia enables powerful reactive binding to any object. By using adaptive techniques Aurelia selects the most efficient way to observe each property in your model and automatically syncs your UI and your state with best-in-class performance. State management, internationalization and validation - all official plugins from the core team. CLI, VS Code plugin, and Chrome debugger - optional tools to enhance development.Starting Price: Free -
33
Inertia
Inertia
Inertia.js is a framework that enables developers to build modern single-page applications using classic server-side routing and controllers. It allows for the creation of fully client-side rendered SPAs without the complexity typically associated with such applications. Inertia.js operates without client-side routing or the need for an API, allowing developers to build controllers and page views as usual. It functions as a connector between server-side frameworks and modern frontend frameworks, offering official client-side adapters for React, Vue, and Svelte, and server-side adapters for Laravel, Rails, and Phoenix. This approach enables the development of modern SPAs while leveraging existing server-side patterns. Inertia isn't a replacement for your existing server-side or client-side frameworks. Rather, it's designed to work with them. Think of Inertia as the glue that connects the two. Inertia does this via adapters. -
34
Sails
Sails
Build practical, production-ready Node.js apps in a matter of weeks, not months. Sails is the most popular MVC framework for Node.js, designed to emulate the familiar MVC pattern of frameworks like Ruby on Rails, but with support for the requirements of modern apps, data-driven APIs with scalable, service-oriented architecture. Sails makes it easy to build custom, enterprise-grade Node.js apps. Building on top of Sails means your app is written entirely in JavaScript, the language you and your team are already using in the browser. Sails bundles a powerful ORM, Waterline, which provides a simple data access layer that just works, no matter what database you're using. Sails comes with blueprints that help jumpstart your app's backend without writing any code. Since Sails translates incoming socket messages for you, they're automatically compatible with every route in your Sails app. Sails offers commercial support to accelerate development and ensure best practices in your code.Starting Price: Free -
35
QUnit
QUnit
The powerful, easy-to-use JavaScript testing framework. Easy, zero-configuration setup for any Node.js project and minimal configuration for browser-based projects. Tests can be run anywhere; Node, your browser, even inside a web worker. Test your code where it runs. Flexible APIs for custom assertions, runners, and reporters mean you can extend QUnit to fit your needs. Getting started with QUnit for Node.js projects is quick and easy. First, install the QUnit package using npm. You can now run the test suite through the QUnit CLI. It is recommended that you run the QUnit command via an npm script, which will find the QUnit command automatically from your local dependencies. Check out the API documentation to learn more about the QUnit APIs for organizing tests and making assertions.QUnit follows the Node.js Long-term Support (LTS) schedule and provides support for current, active LTS, and maintenance LTS releases.Starting Price: Free -
36
Solara
Widgetti BV
Many Python frameworks can handle basic dashboards but falter with complex ones, often leading teams to split into frontend and backend roles, causing various challenges. Solara is a new web framework that integrates ReactJS principles with Python simplicity. It offers a flexible API for various UI complexities and efficient state management. Solara supports a range of applications, from prototypes to intricate dashboards, and is compatible with platforms like Jupyter, Voilà, and various web servers. It emphasizes code quality, developer accessibility, and robust testing. -
37
Phalcon
Phalcon
A full-stack PHP framework delivered as a C-extension. Its innovative architecture makes Phalcon the fastest PHP framework ever built. Developers do not need to know C to use Phalcon. Its functionality is exposed as PHP classes and interfaces under the Phalcon namespace, ready to be used. Zephir/C extensions are loaded together with PHP one time on the web server's daemon start process. Classes and functions provided by the extension are ready to use for any application. The code is compiled and isn't interpreted because it's already compiled to a specific platform and processor. Thanks to its low-level architecture and optimizations Phalcon provides the lowest overhead for MVC-based applications. Build single and multi-module applications with ease and pleasure. Using the file structure, scheme, and patterns you already know. Writing REST servers and applications has never been easier, with no boilerplate, and simple services that fit in one file.Starting Price: Free -
38
React Native
Meta
React Native combines the best parts of native development with React, a best-in-class JavaScript library for building user interfaces. Use a little—or a lot. You can use React Native today in your existing Android and iOS projects or you can create a whole new app from scratch. React primitives render to native platform UI, meaning your app uses the same native platform APIs other apps do. Many platforms, one React. Create platform-specific versions of components so a single codebase can share code across platforms. With React Native, one team can maintain two platforms and share a common technology—React. React Native lets you create truly native apps and doesn't compromise your users' experiences. It provides a core set of platform agnostic native components like View, Text, and Image that map directly to the platform’s native UI building blocks.Starting Price: Free -
39
Quarkus
Quarkus
Quarkus tailors your application for GraalVM and HotSpot. Amazingly fast boot time, incredibly low RSS memory (not just heap size!) offering near-instant scale up and high-density memory utilization in container orchestration platforms like Kubernetes. We use a technique we call compile time boot. Quarkus provides a cohesive, fun-to-use, full-stack framework by leveraging a growing list of over fifty best-of-breed libraries that you love and use. A cohesive platform for optimized developer joy with unified configuration and no hassle native executable generation. Zero configs, live reload in the blink of an eye, and streamlined code for the 80% common usages, flexible for the remainder 20%. The combination of Quarkus and Kubernetes provides an ideal environment for creating scalable, fast, and lightweight applications. Quarkus significantly increases developer productivity with tooling, pre-built integrations, application services, and more. -
40
Marionette
Marionette
Organize your app in terms of small Views. Marionette makes it easy to compose rich layouts out of small components. We've added tons of features from templateHelpers, to a declarative UI hash, that will keep you from ever wanting to go back. Share complex UI interactions across views. Behaviors are like mixins, without all of the pain associated with property collision. Decoupled communication between your application components with a powerful messaging system. Write classes with the same API as your views. Marionette Objects support features like extend, events, initialize, and more. Marionette community is home to the most welcoming and vibrant discussions in the Backbone ecosystem. Stop spending more time thinking about your framework than your app. Marionette will never get in the way of you and your code.Starting Price: Free -
41
Vert.x
Vert.x
Handle more requests with fewer resources compared to traditional stacks and frameworks based on blocking I/O. Vert.x is a great fit for all kinds of execution environments, including constrained environments like virtual machines and containers. People told you asynchronous programming is too hard for you? We strive to make programming with Vert.x an approachable experience, without sacrifying correctness and performance. Don’t waste resources, increase deployment density and save money. You pick the model that works best for the task at hand, callbacks, promises, futures, reactive extensions, and (Kotlin) coroutines. Vert.x is a toolkit, not a framework, so it is naturally very composable and embeddable. We have no strong opinion on what your application structure should be like. Select the modules and clients you need and compose them as you craft your application.Starting Price: Free -
42
Grails
Grails
A powerful Groovy-based web application framework for the JVM built on top of Spring Boot. Convention-over-configuration, sensible defaults, opinionated APIs, and the Groovy language combine to make the Grails® framework easy to learn for Java developers. The Grails framework is built on top of Spring Boot and leverages Spring Boot's time-saving features, such as Spring-powered dependency injection. The Grails framework seamlessly and transparently integrates and interoperates with Java, the JVM, and existing Java EE containers. Apache Groovy is a language for the Java platform designed to enhance developers' productivity. It is an optionally-typed and dynamic language but with static-typing and static compilation capabilities. The Grails framework seamlessly integrates with GORM, a data access toolkit that provides a rich set of APIs for accessing relational and non-relational data. GORM also includes implementations for Hibernate (SQL), MongoDB, Cassandra, and Neo4j.Starting Price: Free -
43
Oorian
Corvus Engineering
Oorian is Java-based framework for creating dynamic, interactive, data-driven web applications purely in Java allowing you to leverage all the benefits of object-oriented design in your applications front-end to back-end. Your entire web application, including the UI, can be written in Java without the need for maintaining separate HTML, CSS, and/or Javascript code. -
44
Jetpack Compose
Google
Jetpack Compose is Android’s recommended modern toolkit for building native UI. It simplifies and accelerates UI development on Android. Quickly bring your app to life with less code, powerful tools, and intuitive Kotlin APIs.Starting Price: Free -
45
Vanilla JS
Vanilla JS
Vanilla JS is a fast, lightweight, cross-platform framework for building incredible, powerful JavaScript applications. The Vanilla JS team takes pride in the fact that it is the most lightweight framework available anywhere; using our production-quality deployment strategy, your users' browsers will have Vanilla JS loaded into memory before it even requests your site. Vanilla JS is so popular that browsers have been automatically loading it for over a decade.Starting Price: Free -
46
GraalVM
GraalVM
Discover libraries and frameworks that work out-of-the-box with Native Image. Apply Graal, an advanced optimizing compiler, that generates faster and leaner code requiring fewer compute resources. Compile Java applications ahead of time to native binaries that start up instantly and deliver peak performance with no warmup time. Leverage the best features and libraries of popular languages in a single app with no overhead. Debug, monitor, profile, and optimize resource consumption in Java and across multiple languages. GraalVM’s high-performance JIT compiler generates optimized native machine code that runs faster, produces less garbage, and uses less CPU thanks to a battery of advanced compiler optimizations and aggressive and sophisticated inlining techniques. The end results are applications that run faster and consume fewer resources, reducing cloud and infrastructure costs.Starting Price: Free -
47
Livewire
Laravel
Livewire is a full-stack framework for Laravel that simplifies building dynamic interfaces without leaving the comfort of Laravel. It allows developers to create modern, reactive web applications using Laravel's Blade templating engine, eliminating the need for a separate frontend framework. Livewire components can communicate with each other through a global event system, enabling seamless interaction between components on the same page. The framework supports features like data binding, validation, and lifecycle hooks, facilitating the development of complex, dynamic interfaces. By handling frontend interactions on the server side, Livewire reduces the complexity of building dynamic UIs, allowing developers to focus on application logic without extensive JavaScript. Livewire renders the initial component output with the page. This way, it's SEO-friendly. When an interaction occurs, Livewire makes an AJAX request to the server with the updated data. -
48
Svelte
Svelte
Svelte is a radical new approach to building user interfaces. Whereas traditional frameworks like React and Vue do the bulk of their work in the browser, Svelte shifts that work into a compile step that happens when you build your app. Instead of using techniques like virtual DOM diffing, Svelte writes code that surgically updates the DOM when the state of your app changes. We're proud that Svelte was recently voted the most loved web framework with the most satisfied developers in a pair of industry surveys. We think you'll love it too. Read the introductory blog post to learn more. Svelte is a tool for building fast web applications. It is similar to JavaScript frameworks such as React and Vue, which share a goal of making it easy to build slick interactive user interfaces. But there's a crucial difference: Svelte converts your app into ideal JavaScript at build time, rather than interpreting your application code at run time.Starting Price: Free -
49
Svelte Native
Svelte Native
Svelte Native is a mobile application framework powered by Svelte, build mobile apps using the friendly web framework you already know. Build cross-platform, native iOS and Android apps without web views. Get truly native UI and performance while sharing skills and code with the web. Use the full power of Svelte including transitions, stores, and reactivity. One of the smoothest development experiences available for mobile. Svelte Native is a new approach to building mobile applications using NativeScript. Where other JavaScript mobile development frameworks like React Native and NativeScript-Vue do the bulk of their work on the mobile device, Svelte Native shifts that work into a compile step that happens when you build your app. Instead of using techniques like virtual DOM diffing, Svelte writes code that surgically updates the native view widgets when the state of your app changes.Starting Price: Free -
50
Electron
Electron
Thousands of organizations spanning all industries use Electron to build cross-platform software. Build cross-platform desktop apps with JavaScript, HTML, and CSS. If you can build a website, you can build a desktop app. Electron is a framework for creating native applications with web technologies like JavaScript, HTML, and CSS. It takes care of the hard parts so you can focus on the core of your application. Electron uses Chromium and Node.js so you can build your app with HTML, CSS, and JavaScript. Electron is an open-source project maintained by the OpenJS Foundation and an active community of contributors. Compatible with Mac, Windows, and Linux, Electron apps build and run on three platforms. To get started with Electron, check out the resources available. Learn how to wrap your web app with Electron, access all the APIs, and generate installers. Also, Electron Fiddle lets you create and play with small Electron experiments.Starting Price: Free