Open source sdk projects
Every project in the registry tagged sdk, ranked by real GitHub adoption.
Free instant whiteboard with real-time collaboration
Univer is a full-stack framework for creating and editing spreadsheets / word processor / presentation on both web and server.
A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.
🧩 The Browser Extension Framework
OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-se
👨🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode,
OpenTelemetry Python API and SDK
PowerWechat是一款基于WeChat SDK for Golang，支持小程序、微信支付、企业微信、公众号等全微信生态
The OpenTelemetry C++ Client
TypeScript ETL toolkit for indexing Ethereum, Solana, and Substrate data, sourced from SQD Network.
Build fast and accurate GenAI apps with GraphRAG SDK at scale 🌟
The Official Dropbox API V2 SDK for Python
The Official Dropbox API V2 SDK for Javascript
The Daml smart contract language
Related tags
Frequently asked questions
How many open source sdk projects are there?
This registry tracks 14 projects tagged sdk, with 129,741 GitHub stars between them. The most-adopted is Tldraw at 51,207 stars.
Are these sdk projects free to use?
Yes — 13 of the 14 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which sdk project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these sdk projects still maintained?
14 of the 14 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.