REST version of the Spring Petclinic sample application
CakePHP: The Rapid Development Framework for PHP - Official Repository
The SMS Gateway for Android™ Server enables the dispatch of SMS messages through Android devices without requiring direct Internet access to them.
GOWA - WhatsApp REST API with support for UI, Multi Account, Webhooks, and MCP, and Chatwoot. Built with Golang for efficient memory use.
:date: Easy!Appointments - Self Hosted Appointment Scheduler
gRPC to JSON proxy generator following the gRPC HTTP spec
🔥 Java enterprise application development framework for full scenario: Restrained, Efficient, Open, Ecologicalll!!! 700% higher concurrency 50% memory savings Startup is 10 times faster. Packing 90% smaller; Compatible with java8 ~ java25; Supports LTS. (Replaceable spring)
MikoPBX — free open-source PBX for small business, built on Asterisk 22, PHP 8.4, and Phalcon 5. Deploy as ISO, Docker, LXC, or in the cloud.
Open Source API List and Testing Tools
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
:triangular_ruler: Ts.ED is a Node.js and TypeScript framework on top of Express to write your application with TypeScript (or ES6). It provides a lot of decorators and guideline to make your code more readable and less error-prone. ⭐️ Star to support our work!
The definitive self-hosted URL shortener
:shield: The independent, comprehensive directory of filter and host lists for advertisements, trackers, malware, and annoyances.
A curated list of free public APIs across 48 categories — searchable, community-maintained, with a free JSON API.
Modern, full-featured, production-ready native iOS app with user authentication and background tag reading.
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
AI-powered code analysis tool - instant bug detection, plain-English explanations, and improvement suggestions for Python, JS, TS, Java, C++. No account needed. GSSoC 2026.
A virtual stock market and trading platform. Includes a fully simulated stock market, with dynamic price changes and news events. Simulation models a real calendar with time sped up