Top GENERATIVE-AI GitHub Repositories & Tools (2026)

Learn it. Build it. Ship it for others.

21 Lessons, Get Started Building with Generative AI

Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.

The agent engineering platform.

Build resilient agents.

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

The Ruby-native AI framework. Chats, agents, tools, images, audio, and video through one consistent API, in plain Ruby or Rails.

Train and serve LLMs at extreme speed and massive throughput.

Framework to build resilient language agents as graphs.

Agent framework for the JVM. Pronounced Em-BAY-bel /ɛmˈbeɪbəl/

An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified endpoint with centralized discovery, guardrails and management. Optimizes Agent & Tool calling, and supports plugins.

📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

Graph-Native Infrastructure for Context and Accountable AI Systems

Streamlined interface for generating images with AI in Krita. Inpaint and outpaint with optional text prompt, no tweaking required.

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

Curated list of the best truly open-source AI projects, models, tools, and infrastructure. Daily updated.

Youtube client with older Android version support, background player, Google Gemini ✨ and many more features.

Official front-end implementation of ComfyUI

Ultrafast serverless GPU inference, sandboxes, and background jobs

LLPhant - A comprehensive PHP Generative AI Framework using OpenAI GPT 4. Inspired by Langchain