Top API GitHub Repositories & Tools (2026)

The official ngrok Kubernetes Operator

API package for code generated by Swift OpenAPI Generator.

Securely scale AI usage across your organization. A single stack to Connect, Secure, Observe and Distribute agents, MCPs, and Skills within your company.

List of open-source Discord API Libraries

Universal Hardware Data Model. A complete modeling of the IEEE SystemVerilog Object Model with VPI Interface, Elaborator, Serialization, Visitor and Listener. Used as a compiled interchange format in between SystemVerilog tools. Compiles on Linux gcc, Windows msys2-gcc & msvc, OsX

ros2_medkit - diagnostics gateway for ROS 2 robots. Faults, live data, operations, scripts, locking, triggers, and OTA updates via REST API. No SSH, no custom tooling.

A modern, mostly zero-allocation C++23 library for working with low-level Windows within user-space. Iteration over loaded modules via PEB, EAT iteration, lazy imports, syscalls, and more.

The cloud-native configuration driven runtime that helps developers implement composite microservices.

Run your own organization of agents

React/Redux version of Graph Explorer used to learn the Microsoft Graph Api

A data-oriented C# Discord library, focused on high-performance concurrency and robust design.

C#/.NET Core bindings for TDLib (Telegram MTProto API)

Versatile email infrastructure on AWS serverless

Apify command-line interface helps you create, develop, build and run Apify Actors, and manage the Apify cloud platform.

Python client for Crossref search API

Build all of your apps using what you already know and love ❤️

Complete, fast and testable actions for Rack and Hanami

High-performance Rust API and AI Gateway with Governance

AtroCore is an enterprise-ready, highly configurable Business Application Platform for managing complex data, integrating systems, and building custom business applications. It provides ready-made solutions for Master Data Management (MDM), Product Information Management (PIM), Digital Asset Management (DAM), and more.

AgenticX is a unified, production-ready multi-agent platform — Python SDK + CLI (agx) + Studio server + Machi desktop app. Features Meta-Agent orchestration, 15+ LLM providers, MCP Hub, hierarchical memory, avatar & group chat, skill ecosystem, safety sandbox, and IM gateway (Feishu/WeChat).