SoapUI is a free and open source cross-platform functional testing
C-based Application Programming Interface (API)
A language for fast, portable data-parallel computation
A package to build progressive web apps with Go programming
Java bytecode engineering toolkit
A programming language that understands what a web app is
A node package wrapper
A server-side Swift web framework
LuaRocks is the package manager for the Lua programming language
End-to-end typesafe APIs made easy
Coroutine-based concurrency library for PHP
Node library to automate Chromium, Firefox & WebKit with a single API
Zero-cost ultra-high-performance declarative DOM library using FRP
Web Application Framework written in Ruby
Compiler for Clojure that targets JavaScript
Lightweight service virtualization/ API simulation / API mocking tool
gRPC to JSON proxy generator following the gRPC HTTP spec
Comprehensive programming and configuration model for modern apps
Cross-platform runtime for cloud, mobile, desktop, and IoT apps
Grails - the Web Application Framework
(Alpha stage software) fastn - Full-stack Web Development Made Easy
qooxdoo - Universal JavaScript Framework
Language for defining cloud service APIs and shapes
API Documentation Browser
wwwBASIC is an implementation of BASIC that runs on Node.js & the Web