Top API GitHub Repositories & Tools (2026)

Automate browser based workflows with AI

Next Generation Agentic Proxy for AI Agents and MCP servers

Customer-run client for Secure MCP Tunnel: connect private or localhost MCP servers to ChatGPT, Codex, the Responses API, and AgentKit without exposing them to the public internet.

Self-hosted OpenAI-compatible API for Qoder CLI login,workbuddy, with SQLite multi-account routing

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

API Support for your favorite torrent trackers

Create agents that monitor and act on your behalf. Your agents are standing by!

📼 The missing YouTube and YouTube Music macOS app

A sandbox for the third-party APIs you depend on. Built from the provider's spec, it fails on purpose, and it replays the exact failure production hit.

Open Source Platform for DTC, B2B Commerce, Marketplaces & Omnichannel. REST APIs, TypeScript SDKs, and production-ready Next.js storefront. Self-host it. Own your data. No vendor lock-in. Zero platform fees.

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

Detect breaking changes between OpenAPI 3.0/3.1 specs. Explainable Web UI, CLI and CI gate; local-first and deterministic, with optional AI summaries.

A curated directory of ecommerce intelligence APIs for products, prices, reviews, sellers, and marketplaces.

Low code web framework for real world applications, in Python and Javascript

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

🎬 Ultimate AI Auto-Clipper — Transform long-form videos & podcasts into viral shorts! Features smart face-tracking, kinetic karaoke subtitles, contextual B-roll, AI voice-overs, and auto-uploaders (YouTube/FB). Powered by Whisper, Gemini, MediaPipe, & Pyannote.

The only browser automation that bypasses anti-bot systems. AI writes network hooks, clones UIs pixel-perfect via simple chat.

Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF

A modular and open-ended toolkit for WebGPU, with advanced type inference and the ability to write shaders in TypeScript

PipesHub is an open-source platform for securely connecting enterprise knowledge to AI. Give AI agents trusted context and your team permission-aware search with verified citations across your business systems.