Alternatives to REST United
Compare REST United alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to REST United in 2026. Compare features, ratings, user reviews, pricing, and more from REST United competitors and alternatives in order to make an informed decision for your business.
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1
Twilio
Twilio
Design and deploy your ideal customer engagement experience. Twilio is a single fully-programmable platform with flexible APIs for any channel and over 400+ integrations, backed by a community of over 9 million developers. Build accurate and personalized experiences for your customers, easily and at scale, using SMS and WhatsApp messaging, voice, video, email, and more. Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Sign up and start building today. -
2
Docmosis
Docmosis Pty Ltd
Docmosis is a self-hosted or SaaS template-based document generation solution. Integrate with custom-built software applications or popular third-party apps using the API. Create templates using MS Word or LibreOffice. Add plain-text placeholders to control: the insertion of text/images/tables; conditionally add/remove any content; perform calculations; loop over repeating data; format data/numbers and much more. Used by customers in Finance, Health, Legal, Education, Government, HR, Insurance, Logistics, and Manufacturing to generate customized letters invoices, proposals, contracts, statements, reports and more. Integrate with: Custom software built using Java, C#, Python, PHP, Ruby and more via a REST API; Low-code and no-code platforms like Appian, Bubble, Mendix, Outsystems; Third-party form builders or apps that can perform a webhook such as FormAssembly or Salesforce. -
3
pdfRest
Datalogics Inc.
pdfRest API Toolkit was made by developers, for developers. Rapidly integrate PDF workflows with any business application, simply and seamlessly. pdfRest API Toolkit includes all of the PDF processing tools you'll need, to make your job easy. PDF to Word, Excel, PowerPoint, Image, Add to PDF, Query PDF, Extract Text, Convert to PDF, Convert to PDF/A, PDF/X, Compress PDF, Linearize PDF, Flatten Forms, Transparencies, Annotations, Layers, Merge /Split PDF, Encrypt/Decrypt PDF, Restrict PDF, Watermark PDF, Sign PDF, Redact PDF, Import/Export Form Data, Rasterize PDF, PDF to Markdown, XFA to Acroforms, Set Page Box, Create Blank PDF, Delete PDF, Convert PDF Colors, OCR PDF, API Polling, Upload Files, Zip Files. Get up and running fast with the pdfRest Postman Collection or start from functional sample code in NodeJS, .NET, JavaScript, Python, PHP, and cURL from the pdfRest GitHub repository. Gold-standard processing powered by Adobe® PDF Library™ ensures the highest quality results.Starting Price: $0 per month -
4
Postman
Postman
The collaboration platform for API development. Simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman. Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production. Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a backend server. Generate and publish beautiful, machine-readable documentation to make your API easier to consume. Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals. Provide a shared context for building and consuming APIs, and collaborate in real-time.Starting Price: $12 per user per month -
5
Konfig
Konfig
Konfig is a developer tool that automates the generation of SDKs, documentation, demos, and tutorials for REST APIs, facilitating seamless onboarding for external developers. By importing an OpenAPI Specification or Postman Collection, Konfig automatically produces SDKs in popular programming languages, including TypeScript, Python, Java, C#, PHP, Ruby, Go, Swift, and Dart. The platform ensures high-quality SDKs by identifying and rectifying errors in the OpenAPI Specification through its linter and writing test cases to prevent API updates from breaking existing SDKs. Konfig also generates branded, user-friendly documentation that auto-updates with any changes to the API specification, maintaining consistency between documentation and SDKs. Additionally, it allows for the creation of engaging demos and tutorials using familiar Markdown, enabling users to run code in-browser for hands-on learning. -
6
Swagger Codegen
SmartBear
Swagger Codegen can simplify your build process by generating server stubs and client SDKs for any API, defined with the OpenAPI (formerly known as Swagger) specification, so your team can focus better on your API’s implementation and adoption. Moving from design to development has never been easier with Swagger Codegen in SwaggerHub. API Definition files can be used to create stubs in popular languages, like Java, Scala, and Ruby, with just a few clicks.Starting Price: Free -
7
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 -
8
Tradefeeds
Tradefeeds
Tradefeeds is financial service software company that provides real-time and historic company, financial and alternative data of more than 7000 publicly traded companies in the USA. Our product portfolio includes: company information, SEC filings, company financial statements, financial ratios, technical indicators, ETF holdings, mutual funds, stock identification, analyst ratings, macro and search trends data. You can request data retrieval from Tradefeeds Financial Database in various formats: either through JSON REST API or as downloadable CVS and Excel files. Keep in mind that our developer-friendly API is available in several programming languages including Javascript, JQuery, VueJS, Angular, JAVA, PHP, NodeJS, Python, Go, Ruby, C#, R, Strest, Rust, Swift and Scala. Regardless of the format of your choice, you will access data instantly. Our customer base is diverse and it consists of fintechs, financial institutions, investors, traders, universities, developers and more.Starting Price: $99/month -
9
Commoditic
Commoditic
Commoditic is a financial API data provider of spot and historical prices of major commodity asset types. The commodity pricing data covers metals, energy commodities, industrial commodities, agricultural commodities and livestock commodities. Users can get commodities prices data via two data delivery methods: JSON REST API or downloadable databases in Excel or CSV format. Metal Prices API, Energy Prices API, Industrial Commodities API, Agricultural Commodities API and Livestock Commodities API are also available in several other programming languages like Javascript, JQuery, VueJS, Angular, JAVA, PHP, NodeJS, Python, Go, Ruby, C#, R, Strest, Rust, Swift and Scala. Regardless of the data delivery method users choose, they access commodity pricing data right away. Commoditic has customers of diverse background. We help fintechs, financial institutions, investors, traders, universities and freelance developers streamline their projects.Starting Price: $79 -
10
Aviyair
Aviyair
Aviyair is an aviation data provider that offers essential flight data retrieved from the databases by JSON REST API. The product portfolio includes seven main types of flight data that are entitled exactly as the APIs. These are Flight Tracker and Status API, Global Flight Schedules, Historical Flight Schedules API, Future Schedules API, Flight Delay API, Airline Routes API and Airport and City Autocomplete Location API. The flight data APIs are also supported in other programming languages such as JAVA, Javascript, JQuery, VueJS, NodeJS, Angular, PHP, Ruby, Python, C#, Go, R, Strest, Rust, Scala and Swift. Except for getting the data by API, clients can request Excel and CSV databases that they can download upon request. Aviyair's list of clients consists of travel companies, tour operators, small and medium-sized business dependent on aviation data, insurance companies, airports and air transport employees.Starting Price: $129 -
11
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 -
12
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 -
13
REST Assured
REST Assured
Testing and validating REST services in Java is harder than in dynamic languages such as Ruby and Groovy. REST Assured brings the simplicity of using these languages into the Java domain.Starting Price: Free -
14
Theneo
Theneo
Unlock the full potential of AI-powered API documentation. Create stunning, low-maintenance, and engaging docs with a single upload. Import your API collection manually or automatically with a little help from our integration tools for your favorite platforms like Postman. Whether you're building a REST, GraphQL or any other API, we've got you covered. Generates detailed descriptions and summaries for superior API documentation. Ensures flawless, up-to-date documentation. Effortless content search and auto code generation. Automatically update documentation when code changes. Extensions are available for Github, Gitlab, Bitbucket, VS Code, Postman, and more. Customize the appearance of your API docs. Adjust colors and visual elements to match your branding. Make documentation look like part of your website. Effortlessly create and maintain beautiful API docs with simple commands, right from your favorite development tools and source code editors.Starting Price: $120 per month -
15
DynamicPDF API
DynamicPDF API
DynamicPDF API (dpdf.io) is a comprehensive REST API platform that lets developers quickly add robust PDF functionality to their applications with real-time performance and global availability. It offers multiple REST endpoints for creating and processing PDFs, including generating PDFs from images, HTML, Word, Excel, or template data, merging documents, converting content, filling and flattening forms, adding barcodes and stamps, securing and encrypting files, and extracting text, metadata, or XMP information. DynamicPDF includes an online Designer tool for visually building PDF reports and templates, plus client libraries in languages such as Node.js, .NET, Java, PHP, Go, Python, and Ruby for easy integration without constructing raw HTTP calls. PDFs are created and assembled in milliseconds with scalable infrastructure that routes requests to the closest global zone, while the service never stores client data unless explicitly requested.Starting Price: Free -
16
AutoRest
Microsoft
The AutoRest tool generates client libraries for accessing RESTful web services. Input to AutoRest is a spec that describes the REST API using the OpenAPI specification format and streamlines the creation of client code across multiple programming languages, including C#, Java, Python, TypeScript, and Go. This automation enhances consistency and efficiency in API consumption, reducing the manual effort required to develop and maintain client libraries. AutoRest operates through a flexible pipeline that processes OpenAPI input files, transforming them into a code model which is then utilized by language-specific generators to produce client code adhering to each language's design guidelines. The tool supports both OpenAPI 2.0 and 3.0 specifications, ensuring compatibility with a wide range of APIs. Developers can install AutoRest on Windows, macOS, or Linux systems, with installation facilitated via Node.js.Starting Price: Free -
17
PDFreactor
RealObjects
Whenever you need to generate PDF from HTML there is usually a lot to take into consideration to achieve impeccable printing results. If you want to convert a HTML file to PDF, if you use a webpage or rely on Database Publishing – there is a way to turn even complex HTML into PDF. With PDFreactor you count on a powerful HTML to PDF converter software. The wide range of functions exceed most converter tools and bring your PDF converting to the next level. Easily convert HTML to PDF. Supports HTML5, CSS3, JavaScript. APIs for JavaScript, Java, PHP, .NET, Python, Ruby, Perl, Node.js, SOAP, REST. Docker Image. Free Personal License! PDFreactor is the perfect printing component for web applications, incl. Database Publishing, Web-to-Print, PIM, DMS, MDM, DAM, WCMS, VDP etc. It is typically used for server-side conversion of HTML to PDF, ranging from dynamic data-driven documents (reports, invoices, forms, data sheets) for electronic distribution to complex and high-quality PDFs.Starting Price: $2,950 -
18
Fern
Fern
Stripe-level SDKs and Docs for your API. Offer type-safe SDKs in the most popular languages. Let Fern do the heavy lifting of generating and publishing client libraries so your team can focus on building the API. Import your API definition, whether it's in OpenAPI or Fern's simpler format. Select which code generators you'd like to use: TypeScript, Python, Java, Go, Ruby, C#, Swift. Fern semantically versions and publishes packages to each registry (e.g. npm, pypi, maven). Beautiful API documentation that reflects your brand.Starting Price: $250 per month -
19
Koyeb
Koyeb
Push code to production, everywhere, in minutes with Koyeb. Accelerate backend apps at the edge with high-performance hardware. Connect your GitHub account to Koyeb, choose a repository to deploy, and leave us the infrastructure. We build, deploy, run, and scale your application with zero configuration. Simply git push, and we build and deploy your app with blazing fast built-in continuous deployment. Develop fearlessly with native versioning of all deployments. Build Docker containers, host them on any registry, and atomically deploy your new version worldwide in a single API call. Invite your team to build together and enjoy a live preview after each push with built-in CI/CD. The Koyeb platform lets you combine the languages, frameworks, and technologies you use. Deploy any application without modifications thanks to native support of popular languages and Docker containers. Koyeb detects and builds apps in Node.js, Python, Go, Ruby, Java, PHP, Scala, Clojure, and more.Starting Price: $2.7 per month -
20
Browshot
Browshot
Browshot is a real-time web page screenshot service and API that lets developers programmatically capture high-quality screenshots of any live website in multiple resolutions and device types, including desktop and mobile browsers supporting HTML5, CSS3, and JavaScript rendering for accurate visual output. It provides a comprehensive REST API with simple and full feature sets, enabling automatic requests for screenshots, thumbnails of any size and ratio, and even full-page captures with configurable options like delay before capture, custom headers, and CSS selector targeting; results can be retrieved, hosted, and downloaded directly or automatically uploaded to AWS S3/CDN. Browshot supports over 30 different browser configurations and offers open source libraries and command-line tools for easy integration with languages like Python, PHP, Perl, Ruby, C#, and Node.js.Starting Price: Free -
21
GrabzIt
GrabzIt
GrabzIt is a web capture platform offering APIs and online tools to programmatically convert web content into usable formats, such as high-quality screenshots (PNG, JPG, WEBP, TIFF, BMP, SVG), searchable PDFs, editable DOCX files, rendered HTML, icons, animated GIFs from online videos, and structured data like CSV, JSON, or Excel from HTML tables, directly from URLs or raw HTML, while handling modern web standards including CSS3, web fonts, and JavaScript for accurate rendering. Its RESTful API and native libraries across major languages (PHP, Python, Node.js, Ruby, C#, Perl, and more) let developers integrate web capture functionality into applications, automate workflows, and customize options such as browser size, capture delay, element-specific screenshots, custom cookies, watermarks, and more; GrabzIt also includes a web scraper to extract data from websites, a screenshot tool for automated and scheduled captures with archival and exporting to local storage.Starting Price: $1.99 per month -
22
Toolpad Core
MUI
Toolpad Core is a self-hosted, low‑code internal tool builder tailored for full-stack and back-end developers, empowering them to craft admin interfaces, dashboards, and CRUD apps using drag‑and‑drop visuals while retaining full code control. Built on MUI's robust React component ecosystem, integrating MUI Core and X libraries, it offers a Postman‑like query builder for REST APIs, the ability to import custom React components, and smooth integration with Node.js backends, eliminating the need for boilerplate API wiring. Toolpad operates entirely locally, storing configuration in version-control–friendly files and giving developers the freedom to extend from low‑code prototypes to production‑grade features using JavaScript and TypeScript. With deep alignment to React, TypeScript, Next.js, and local IDE workflows, Toolpad bridges the gap between rapid UI assembly and maintainable, production-ready development.Starting Price: $180 per year -
23
Ruby Grape
Ruby Grape
An opinionated framework for creating REST-like APIs in Ruby. -
24
Conda
Conda
Package, dependency, and environment management for any language, Python, R, Ruby, Lua, Scala, Java, JavaScript, C/ C++, Fortran, and more. Conda is an open-source package management system and environment management system that runs on Windows, macOS, Linux, and z/OS. Conda quickly installs, runs, and updates packages and their dependencies. Conda easily creates, saves, loads, and switches between environments on your local computer. It was created for Python programs, but it can package and distribute software for any language. Conda as a package manager helps you find and install packages. If you need a package that requires a different version of Python, you do not need to switch to a different environment manager, because conda is also an environment manager. With just a few commands, you can set up a totally separate environment to run that different version of Python, while continuing to run your usual version of Python in your normal environment.Starting Price: Free -
25
Verifalia
Cobisi Research
Keep your mailing lists free of invalid, risky and mistaken email addresses. Protect your sender reputation. Reduce your bounce rate. And keep your critical emails out of your clients' junk folder with email verification by Verifalia. Our email verification service identifies all invalid emails for you as well as risky email types like spam traps, role accounts, catch-all servers and disposable email addresses. Plus, use our exclusive premium validation services to navigate even the most difficult of email servers with highest accuracy. The Verifalia email verification API can help you in two powerful ways. Our RESTful HTTPS API is secure and easy to integrate, with SDK's available for .NET, JavaScript (Node.js and the browser), PHP, Ruby and Java. Only Verifalia offers three levels of service quality and detailed response codes. In real-time! Our pricing is flexible, because we know that your business isn't static.Starting Price: $4 per month -
26
SlickEdit
SlickEdit
A true cross-platform, multi-language code editor, with support for over 60 languages on 9 platforms. Build or compile your project, then double-click on an error message in the Build window to jump to that location. Errors and warnings are marked with an icon in the left margin. In addition, the overview bar, positioned alongside the vertical scrollbar, marks the position of errors and warnings relative to the current scroll position in the document. To quickly scroll a marked location into view, you can drag the scrollbar slider to the mark, or click on the mark itself. SlickEdit's integrated debugging provides a convenient and easy to use front-end for many debuggers. Set breakpoints, step, inspect the stack, view variables/members - all the features you expect from a debugger. SlickEdit supports debugging for: GNU C/C++, Java, WinDbg, Clang C/C++ LLDB, Google Go, Python, Perl, Ruby, PHP, XCode, Scala, C# using Mono, Visual Basic using Mono, and Android JVM/NDK.Starting Price: $99.95 -
27
Swagger
SmartBear
Simplify API development for users, teams, and enterprises with the Swagger open source and professional toolset. Find out how Swagger can help you design and document your APIs at scale. The power of Swagger tools starts with the OpenAPI Specification — the industry standard for RESTful API design. Individual tools to create, update and share OpenAPI definitions with consumers. SwaggerHub is the platform solution to support OpenAPI workflows at scale. Swagger open source and pro tools have helped millions of API developers, teams, and organizations deliver great APIs. Swagger offers the most powerful and easiest to use tools to take full advantage of the OpenAPI Specification. -
28
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 -
29
Deeplearning4j
Deeplearning4j
DL4J takes advantage of the latest distributed computing frameworks including Apache Spark and Hadoop to accelerate training. On multi-GPUs, it is equal to Caffe in performance. The libraries are completely open-source, Apache 2.0, and maintained by the developer community and Konduit team. Deeplearning4j is written in Java and is compatible with any JVM language, such as Scala, Clojure, or Kotlin. The underlying computations are written in C, C++, and Cuda. Keras will serve as the Python API. Eclipse Deeplearning4j is the first commercial-grade, open-source, distributed deep-learning library written for Java and Scala. Integrated with Hadoop and Apache Spark, DL4J brings AI to business environments for use on distributed GPUs and CPUs. There are a lot of parameters to adjust when you're training a deep-learning network. We've done our best to explain them, so that Deeplearning4j can serve as a DIY tool for Java, Scala, Clojure, and Kotlin programmers. -
30
NSwag
Rico Suter
NSwag is a comprehensive Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, .NET Core, ASP.NET Core, and TypeScript, written in C#. It enables developers to generate OpenAPI specifications from existing API controllers and create client code from these specifications. NSwag combines functionalities similar to Swashbuckle (for OpenAPI/Swagger generation) and AutoRest (for client generation) into a single toolchain, eliminating the need for both. Key features include the ability to generate Swagger 2.0 and OpenAPI 3.0 specifications from C# ASP.NET (Core) controllers, serve these specifications via ASP.NET (Core) middleware with integrated Swagger UI or ReDoc, and generate C# or TypeScript clients/proxies from the specifications. NSwag offers multiple usage methods, including a user-friendly Windows GUI (NSwagStudio), command-line interfaces compatible with Windows, Mac, and Linux, and integration into C# code via NuGet packages.Starting Price: Free -
31
Mailtrap
Railsware
Mailtrap is an email delivery platform for developers and product teams, providing a flexible RESTful API and SMTP service to send emails at scale. The platform is built with a focus on high inboxing rates, fast delivery, and 24/7 technical support from deliverability experts. Mailtrap ensures 99.99% uptime with dedicated IPs, auto warm-up, and sender reputation protection. Developers can integrate quickly using SDKs for major languages (Python, Ruby, PHP, etc.) and manage high-volume sending with a customizable API. The platform provides industry-best analytics with helicopter-view dashboards to monitor key metrics and 30-day logs for easy debugging. Trusted by over 150,000 monthly active users including Yelp, PayPal, Atlassian, and Adobe.Starting Price: $15/month -
32
Finnworlds
Finnworlds
Finnworlds is a real-time and historical financial data vendor that aims to develop user-friendly APIs with seamless integration in various programming languages (JSON, Python, Scala, PHP, Java, C#, Rust, Strest, Ruby, etc.) and cutting-edge downloadable databases. The state-of-art tech tools serve as key data delivery methods of the local (US) and global coverage of company and financial data. Finnworlds maintains a portfolio of the following data products: general company information, financial statements including balance sheets, cash flow and income statements, SEC filings, 70+ financial ratios, 100+ stock technical indicators, analyst ratings, ETFs, mutual funds, stock identifiers, macro trend and stock search trends. The data users are of diverse background including fintech start-ups, universities, freelance developers, quantity investment firms, financial institutions, research firms, professionals or novices in trading or investing, consulting firms and many more.Starting Price: $99 per month -
33
Bump.sh
Bump.sh
Bump.sh is the place for API developers to centralize all of their API documentation. Working with REST, Event-Drivent Architecture, or a mix of API technologies? Bump.sh is the only tool on the market that supports OpenAPI/Swagger, AsyncAPI, and soon more (such as GraphQL, SOAP, and gRPC). Plug Bump.sh into your CI, use our CLI, or upload your specification files manually, and benefit from a stunning UI that definitely contrasts with the legacy tools on the market. Enjoy all of the nifty UX details: we know devs will like it, as they were imagined by devs. Unique on the market: every time you publish a new version of your API documentation, Bump.sh automatically detects changes, publishes a changelog, and sends alerts to subscribe readers if the changes break anything.Starting Price: $149 per month -
34
Wardstone
JRL Software LTD
Wardstone is an LLM security API that sits between applications and language model providers, scanning inputs and outputs for threats across four categories in a single call: prompt attacks, content violations, data leakage, and unknown links. It detects jailbreaks, prompt injections, harmful content (hate, violence, self-harm), PII (SSNs, credit cards, emails, phone numbers), and suspicious URLs. Each response returns risk bands per category with sub-30ms latency. Works with any LLM provider. REST API with SDKs for TypeScript, Python, Go, Ruby, PHP, Java, and C#. Free tier at 10,000 calls/month, no credit card required. Includes a browser-based playground for testing.Starting Price: $0/month -
35
Scala
Scala
Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries. The Scala compiler is smart about static types. Most of the time, you need not tell it the types of your variables. Instead, its powerful type inference will figure them out for you. In Scala, case classes are used to represent structural data types. They implicitly equip the class with meaningful toString, equals and hashCode methods, as well as the ability to be deconstructed with pattern matching. In Scala, functions are values, and can be defined as anonymous functions with a concise syntax.Starting Price: Free -
36
Arachni
Arachni
Arachni is a feature-full, modular, high-performance Ruby framework aimed towards helping penetration testers and administrators evaluate the security of modern web applications. It is free, with its source code public and available for review. It is multi-platform, supporting all major operating systems (MS Windows, Mac OS X and Linux) and distributed via portable packages which allow for instant deployment. It is versatile enough to cover a great deal of use cases, ranging from a simple command line scanner utility, to a global high performance grid of scanners, to a Ruby library allowing for scripted audits, to a multi-user multi-scan web collaboration platform. In addition, its simple REST API makes integration a cinch. Finally, due to its integrated browser environment, it can support highly complicated web applications which make heavy use of technologies such as JavaScript, HTML5, DOM manipulation and AJAX. -
37
Node.js
Node.js
As an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications. Upon each connection, the callback is fired, but if there is no work to be done, Node.js will sleep. This is in contrast to today's more common concurrency model, in which OS threads are employed. Thread-based networking is relatively inefficient and very difficult to use. Furthermore, users of Node.js are free from worries of dead-locking the process, since there are no locks. Almost no function in Node.js directly performs I/O, so the process never blocks except when the I/O is performed using synchronous methods of Node.js standard library. Because nothing blocks, scalable systems are very reasonable to develop in Node.js. Node.js is similar in design to, and influenced by, systems like Ruby's Event Machine and Python's Twisted. Node.js takes the event model a bit further. It presents an event loop as a runtime construct instead of as a library.Starting Price: Free -
38
Base AI
Base AI
The easiest way to build serverless autonomous AI agents with memory. Start building local-first, agentic pipes, tools, and memory. Deploy serverless with one command. Developers use Base AI to develop high-quality AI agents with memory (RAG) using TypeScript and then deploy serverless as a highly scalable API using Langbase (creators of Base AI). Base AI is web-first with TypeScript support and a familiar RESTful API. Integrate AI into your web stack as easily as adding a React component or API route, whether you're using Next.js, Vue, or vanilla Node.js. With most AI use cases on the web, Base AI helps you ship AI features faster. Develop AI features on your machine with zero cloud costs. Git integrates out of the box, so you can branch and merge AI models like code. Complete observability logs let you debug AI-like JavaScript, and trace decisions, data points, and outputs. It's like Chrome DevTools for your AI.Starting Price: Free -
39
Lightly
Lightly
Develop your apps efficiently with Multilingual cloud IDE - Lightly. Create high-quality code in no time with AI-generated code and collaborative development features. Lightly is a powerful cloud IDE that supports multiple programming languages, including Java, Python, C++, HTML, JavaScript. Write, run, and debug code on iPad, anywhere, anytime. The AI-generated code feature helps you quickly generate code. Collaborative development enables easy team collaboration in real-time. Lightly can deploy and host your projects without managing infrastructures. We'll provide project images to efficiently help you deploy on AWS, Azure, GCP, or any other cloud provider. You focus on your creativity and ideas, and let the AI programming assistant do the rest for you!Starting Price: $9 per month -
40
Searchify
Searchify
Easily add custom full-text search, without the cost or complexity of managing search servers. Searchify is built for the needs of modern web sites where content is rapidly changing. With Searchify, your index gets updated instantly. Our search engine is optimized to update relevance factors frequently with zero fragmentation penalty. Use locations, votes, ratings or comment counts to improve the quality of your search results. These factors can be used to boost relevant documents and to restrict the results to a radius of a geographic location. Use the service with open-source libraries for several platforms. Clients are available for Ruby, Python, PHP and Java. The community also contributes several alternatives to these and other languages. Besides, our REST API is super simple so you can develop your own client with very little effort. In Searchify, results ordering is defined by a custom sorting algorithm that is expressed in a formula.Starting Price: $59.00/month -
41
Hanabi.rest
Hanabi.rest
Hanabi.rest is an AI-based API building platform. Hanabi.rest creates multi-runtime APIs for web standards. In addition to operating on a live editor on the web, it generates code that works with Cloudflare, Fastly, Deno, Bun, Lagon, AWS, or Node.js. Build a REST API from natural language and screenshots using AI, deploy it on Cloudflare Workers, and immediately roll it out globally. Generates REST APIs from natural language and screenshots. With the live API editor, you can test database access and API endpoints from a sandboxed, secure environment. Share the created APIs using a URL. Publicly available APIs can be forked and further expanded or improved based on natural language. APIs created or shared can be dumped locally via CLI, allowing you to immediately set up a project for development and deployment. Simply import the npm package running in the environment as usual and the type definitions will be downloaded automatically. -
42
Dash
Kapeli
Dash gives your Mac instant offline access to 200+ API documentation sets. Dash is an API documentation browser and code snippet manager. Dash instantly searches offline documentation sets for 200+ APIs, 100+ cheat sheets, and more. You can even generate your own docsets or request docsets to be included. Dash comes with 200+ offline documentation sets. You can choose which documentation sets to download and Dash will take care of the rest, making sure they are kept up to date. You can also generate your own docsets, request docsets or download docsets from third-party sources. All documentation sets have been generated and are maintained with the utmost care. Dash integrates with package managers to generate documentation sets for anything you might need, as well as provide custom documentation sources of their own. Store snippets of code. Easily reuse snippets. Expand snippets in any app. Organize snippets with tags, syntax highlighting, and variable placeholders.Starting Price: Free -
43
InterSystems Caché
InterSystems
InterSystems Caché® is a high-performance database that powers transaction processing applications around the world. It is used for everything from mapping a billion stars in the Milky Way, to processing a billion equity trades in a day, to managing smart energy grids. Caché is a multi-model (object, relational, key-value) DBMS and application server developed by InterSystems. InterSystems Caché provides several APIs to operate with same data simultaneously: key-value, relational, object, document, multi-dimensional. Data can be managed via SQL, Java, node.js, .NET, C++, Python. Caché also provides an application server which hosts web apps (CSP), REST, SOAP, web sockets and other types of TCP access for Caché data. -
44
Viduli
Viduli
Viduli empowers developers to deploy production-ready applications in minutes without DevOps expertise. Supporting 40+ languages and frameworks—from Python and Node.js to Go, Ruby, Java, and beyond—our platform eliminates complex configurations and steep learning curves. Core Services: Ignite - Deploy any application with zero configuration. Features automatic CI/CD from GitHub, auto-scaling, load balancing, health checks, and multi-region deployment. Every push triggers instant deployment. Orbit - Enterprise-grade managed databases in PostgreSQL. Built-in automated backups, point-in-time recovery, and read replicas ensure your data is always protected and performant. Flash - High-performance caching with Redis. Sub-millisecond latency, automatic failover, and data persistence accelerate your applications.Starting Price: $5/month -
45
Deequ
Deequ
Deequ is a library built on top of Apache Spark for defining "unit tests for data", which measure data quality in large datasets. We are happy to receive feedback and contributions. Deequ depends on Java 8. Deequ version 2.x only runs with Spark 3.1, and vice versa. If you rely on a previous Spark version, please use a Deequ 1.x version (legacy version is maintained in legacy-spark-3.0 branch). We provide legacy releases compatible with Apache Spark versions 2.2.x to 3.0.x. The Spark 2.2.x and 2.3.x releases depend on Scala 2.11 and the Spark 2.4.x, 3.0.x, and 3.1.x releases depend on Scala 2.12. Deequ's purpose is to "unit-test" data to find errors early, before the data gets fed to consuming systems or machine learning algorithms. In the following, we will walk you through a toy example to showcase the most basic usage of our library. -
46
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. -
47
ScreenshotOne
ScreenshotOne
ScreenshotOne is a screenshot API designed for developers to render website screenshots with a simple API call, eliminating the need to manage browser clusters and handle complex scenarios. The platform offers features such as removing ads, blocking cookie banners, and hiding chat widgets to ensure clean screenshots. It supports various customization options, including rendering in dark mode, hiding specific selectors, clicking on elements, and adding custom JavaScript and CSS. ScreenshotOne delivers pixel-perfect quality, accommodating any screen size or predefined device settings, and can capture full-page screenshots with rendered lazy-loaded images. Integration is straightforward, with support for multiple programming languages like Java, Go, Node.js, PHP, Python, Ruby, and C#. The platform also provides no-code integrations with tools such as Zapier, Airtable, and Bubble, allowing users to render website screenshots without writing code.Starting Price: $17 per month -
48
Serverless computing is ideal for systems with unpredictable loads. Storage scaling, query execution, and backup layers are fully automated. The compatibility of the service API in serverless mode allows you to use the AWS SDKs for Java, JavaScript, Node.js, .NET, PHP, Python, and Ruby. YDB is hosted in three availability zones, ensuring availability even if a node or availability zone goes offline. If equipment or a data center fails, the system automatically recovers and continues working. YDB is tailored to meet high-performance requirements and can process hundreds of thousands of transactions per second with low latency. The system was designed to handle hundreds of petabytes of data.
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49
Doppio.sh
Doppio.sh
Doppio is a fully managed API service that lets developers efficiently convert HTML content or web pages into beautiful PDF documents and PNG screenshots using a high-fidelity rendering engine without having to build or maintain their own rendering infrastructure, handling modern web standards including HTML, CSS, web fonts, and JavaScript, so outputs are accurate and visually consistent with the source. Through simple API calls, users can perform synchronous or asynchronous rendering, optionally upload results directly to their own S3 storage via presigned URLs, and integrate it into any technology stack (Node.js, Python, PHP, Ruby, etc.) with ready-made code examples and SDK support that accelerate implementation. Doppio provides features such as observability and logging to aid debugging while maintaining privacy,a scalable infrastructure that can handle hundreds to millions of document renders, webhook support for callback workflows, and an HTML template system.Starting Price: $16 per month -
50
Apitive Studio
Apitive
Design, Document, Mock and Publish your APIs in OpenAPI 3.0 specification. A sleek UI that allows its users to design REST APIs intuitively. Product managers can now be less or notdependent on engineering teams to create API designs; thus increasing time to market. Workbench includes a refined review tool that allows users to submit their API designs for peer reviews. Achieve enterprise wide interface design standardization with Apitive Studio by creating reusable data models and global policies. Share them across various products and provide uniformity in your API Designs and Implementations. API designs are only as good as its document. Auto generate complete API documentation as web pages that provides both technical and business documentation to its consumers. Apitive Studio also deploys the documentation as a portal at pre-defined location for consumption saving time and effort. Socialize your APIs with external consumers and get instant validation.
