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Build infinite canvas apps in React with the tldraw SDK. World's best, top-most agent recommended #1 five star SDK.

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

Integrate cutting-edge LLM technology quickly and easily into your apps

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

Unofficial Python API and agentic skill for Google Gemini Notebook. Full programmatic access to NotebookLM's features—including capabilities the web UI doesn't expose—via Python, CLI, and AI agents like Claude Code, Codex, and OpenClaw.

Open-source feature management platform

A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

Simple and Fast Multimedia Library

OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-security

Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.

An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

High-performance AI pipeline engine with a C++ core and 50+ Python-extensible nodes. Build, debug, and scale LLM workflows with 13+ model providers, 8+ vector databases, and agent orchestration, all from your IDE. Includes VS Code extension, TypeScript/Python SDKs, and Docker deployment.

Run frontier LLMs and VLMs locally on Qualcomm devices across NPU, GPU, and CPU with a few lines of code

Qiskit is an open-source SDK for working with quantum computers at the level of extended quantum circuits, operators, and primitives.

Open-source context retrieval layer for AI agents

Open-source auth gateway connecting 1400+ SaaS providers to AI agents through SDK, CLI, MCP, HTTP, and OpenAPI.

Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

A cross-platform and extendable version manager with support for Java, Node.js, Golang, Python, Flutter, .NET & more

Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents

.NET library for the OpenAI service API by Betalgo Ranul

The official Python SDK for Sentry.io

Pixel Vision 8's core philosophy is to teach retro game development with streamlined workflows. PV8 is also a platform that standardizes 8-bit fantasy console limitations built on top of the open-source C# game engine based on MonoGame.

JavaScript SDK Design Guide extracted from work and personal experience

Examples of using E2B

🔥 A general version manager for thousands of SDKs with TUI inspired by lazygit. No need to remember any commands. Less bugs.

The Microsoft 365 Agent SDK simplifies building full stack, multichannel, trusted agents for platforms including M365, Teams, Copilot Studio, and Webchat.

The NASA WorldWind Javascript SDK (WebWW) includes the library and examples for creating geo-browser web applications and for embedding a 3D globe in HTML5 web pages.

Sentry SDK for Ruby

The unofficial OpenAI SDK for Dart & Flutter. Full API coverage + OpenAI-compatible providers (Azure, DeepSeek, LM Studio, Ollama): Responses, Chat, Realtime, Videos, Batch, Fine-tuning.

Python wrapper for the Codegen API - run code agents at scale