Best Open Source copilot Libraries

#1x1xhlol/system-prompts-and-models-of-ai-tools

FULL Augment Code, Claude Code, Cluely, CodeBuddy, Comet, Cursor, Devin AI, Junie, Kiro, Leap.new, Lovable, Manus, NotionAI, Orchids.app, Perplexity, Poke, Qoder, Replit, Same.dev, Trae, Traycer AI, VSCode Agent, Warp.dev, Windsurf, Xcode, Z.ai Code, Dia & v0. (And other Open Sourced) System Prompts, Internal Tools & AI Models

#2github/spec-kit

💫 Toolkit to help you get started with Spec-Driven Development

#3dbeaver/dbeaver

Free universal database tool and SQL client

#4diegosouzapw/OmniRoute

Never stop coding. Free MIT AI gateway: one endpoint, 290+ providers (90+ free), 500+ models — Kimi, Claude, GPT, OpenAI, Gemini, GLM, DeepSeek, MiniMax. Works with Claude Code, Codex, Cursor, OpenCode, Cline & Copilot. Quota-aware auto-fallback, RTK+Caveman compression saves 15-95% tokens, MCP/A2A, Desktop/PWA. Built by 500+ contributors

#5nextlevelbuilder/ui-ux-pro-max-skill

An AI SKILL that provide design intelligence for building professional UI/UX multiple platforms

#6chatboxai/chatbox

Powerful AI Client

#7CopilotKit/CopilotKit

The Frontend Stack for Agents & Generative UI. React + Angular. Makers of the AG-UI Protocol

#8voideditor/void

#9e2b-dev/awesome-ai-agents

A list of AI autonomous agents

#10getpaseo/paseo

Orchestrate multiple coding agents from desktop and mobile

#11dice2o/BingGPT

Desktop application of new Bing's AI-powered chat (Windows, macOS and Linux)

#12assistant-ui/assistant-ui

Typescript/React Library for AI Chat💬🚀

#13lencx/Noi

🚀 Less chaos. More flow.

#14logancyang/obsidian-copilot

THE Copilot in Obsidian

#15rullerzhou-afk/clawd-on-desk

A pixel desktop pet that watches Claude Code, Codex, Cursor & other AI coding agents — so you don't have to.

#16netease-youdao/LobsterAI

Open-source, desktop-grade AI agent that gets real work done — data analysis, slides, docs, video & web research. Built on OpenClaw; runs tools on your real desktop and takes commands from your phone via WeChat, Feishu, DingTalk & Telegram.

#17mksglu/context-mode

Privacy-first. MCP is the protocol for tool access. We're the virtualization layer for context.

#18ant-design/x

Craft AI-driven interface effortlessly🤖

#19fujibee/agmsg

Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini & Copilot talk to each other in one team. Bash + SQLite, no daemon, no framework.

#20917Dhj/DeepPaperNote

DeepPaperNote is an agent skill for deep-reading a single paper and generating high-quality Obsidian-style research notes. Works with Claude Code, Codex, Cursor, Copilot, Gemini CLI, and more.