Top REST GitHub Repositories & Tools (2026)

PHP implementation of the GraphQL specification based on the reference implementation in JavaScript

:date: Easy!Appointments - Self Hosted Appointment Scheduler

Shopware 6 is an open commerce platform based on Symfony Framework and Vue and supported by a worldwide community and more than 3.100 community extensions

PHP Curl Class makes it easy to send HTTP requests and integrate with web APIs

WarpDrive is the lightweight data library for ambitious web apps — universal, typed, reactive, and ready to scale.

⚡ AcePanel - Enterprise server operation and maintenance management panel

Self-hosted database backup manager with a web UI. Schedule, backup, and restore MySQL, PostgreSQL, MariaDB, Microsoft SQL Server, MongoDB, SQLite & Redis to S3, SFTP, Samba or local storage. SSH Tunnel support.

Unofficial Firebase Admin SDK for PHP

Open Source CRM for Startups and enterprises. Django + SvelteKit · Self-hosted · Multi-tenant · Free forever

Self-Hosted API Management for Builders

Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.

Zero-dependency TypeScript library for serializing data to the JSON:API specification with full type safety, relationships, links, and pagination

Easily access public holidays for 200+ countries via .NET, REST API, Docker, or NuGet for online and offline use.

Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.

Free open-source desktop app that scrapes JAV metadata and generates NFO + cover art for Jellyfin, Emby & Kodi. No Docker, no CLI — one-click install on Windows & macOS. 8 built-in sources + optional Metatube federation (30+ providers), actress collections, cross-language tag aliases, and a REST API for AI agents.

A fix that restores broken visual effects, fixes vanilla game crashes, adds custom resolutions, and much more to the Metal Gear Solid Master Collection.

Simulate API failures, throttling, and chaos — all from your command line.

A framework for building JSON:API compliant REST APIs using ASP.NET and Entity Framework Core.

Offline-first workout tracker for strength and cardio, with progress graphs, rest timers, and custom themes. Built with Flutter.

A C# Client library for Supabase