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Discover open-source AI tools.

1,004 apps, agents and plugins from GitHub, ranked on how actively they are maintained rather than on stars. Security review is in progress and every project shows exactly what has and has not been checked.

tech·an·dri·a/tɛkˈændriə/n.

A library for the tools of a new age. After the Library of Alexandria, which copied every scroll that reached its harbour before it went on the shelf.

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Ranked by total stars at the last daily refresh. This is not stars earned during the selected period. Star counts in the AI category are known to be inflated by fake-star campaigns, so activity and license are shown first.

112 projects matching “engine”Page 1 of 5

ponytail

DietrichGebert/ponytail

Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

Pushed 6 days ago.MIT LicenseJavaScriptPlugins183.4k+5.7k

prompts.chat

f/prompts.chat

f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Free and open source — self-host for your organization with complete privacy.

Pushed yesterday.OtherHTMLApps175.7k+975

langchain

langchain-ai/langchain

The agent engineering platform.

Pushed yesterday.MIT LicensePythonAgents148.9k+391

spec-kit

github/spec-kit

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

Pushed yesterday.MIT LicensePythonDeveloper tools146.3k+3.2k

caveman

JuliusBrussee/caveman

🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman

Pushed yesterday.OtherGoSkills117.1k+1.7k

agent-skills

addyosmani/agent-skills

Production-grade engineering skills for AI coding agents.

Pushed 2 days ago.MIT LicenseJavaScriptSkills113.0k+2.0k

claude-mem

thedotmack/claude-mem

Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context back into future sessions. Works with Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode + More

Pushed yesterday.Apache License 2.0TypeScriptPlugins111.4k+7.8k

open-design

nexu-io/open-design

🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes, landing pages, dashboards, slides, images & video — real files, HTML/PDF/PPTX/MP4 export. 🤖 Claude Code / Codex / Cursor / DeepSeek Harness / OpenCode & 20+ CLIs via BYOK.

Pushed yesterday.Apache License 2.0TypeScriptDesign systems105.7k+1.4k

vllm

vllm-project/vllm

A high-throughput and memory-efficient inference and serving engine for LLMs

Pushed yesterday.Apache License 2.0PythonDeveloper tools96.2k+542

ragflow

infiniflow/ragflow

RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

Pushed yesterday.Apache License 2.0GoDeveloper tools93.4k+472

lobehub

lobehub/lobehub

🤯 LobeHub is your Chief Agent Operator, organizing your agents into 7×24 operations by hiring, scheduling, and reporting on your entire AI team.

Pushed yesterday.OtherTypeScriptAgents83.8k+252

headroom

headroomlabs-ai/headroom

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

Pushed yesterday.Apache License 2.0PythonDeveloper tools78.7k+724

OpenSpec

Fission-AI/OpenSpec

Spec-driven development (SDD) for AI coding assistants.

Pushed yesterday.MIT LicenseTypeScriptApps73.8k+677

oh-my-openagent

code-yeongyu/oh-my-openagent

OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

Pushed yesterday.OtherTypeScriptApps70.7k+268

humanizer

blader/humanizerScanned · findings(2)

Agent skill that removes signs of AI-generated writing from text

Pushed 7 days ago.MIT LicensePythonSkills64.2k+3.0k

meilisearch

meilisearch/meilisearch

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

Pushed yesterday.OtherRustDeveloper tools59.8k+78

academic-research-skills

Imbad0202/academic-research-skills

Academic Research Skills for Claude Code: research → write → review → revise → finalize

Pushed 2 days ago.OtherPythonSkills55.2k+1.0k

LocalAI

mudler/LocalAI

LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.

Pushed yesterday.MIT LicenseGoDeveloper tools50.2k+162

ray

ray-project/ray

Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads.

Pushed yesterday.Apache License 2.0PythonDeveloper tools44.2k+62

agents

wshobson/agents

Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, and Google Antigravity

Pushed 2 days ago.MIT LicensePythonPlugins42.1k+283

prompt-optimizer

linshenkx/prompt-optimizer

An AI prompt optimizer for writing better prompts and getting better AI results.

Pushed yesterday.OtherTypeScriptApps40.5k+1.1k

PageIndex

VectifyAI/PageIndex

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

Pushed yesterday.MIT LicensePythonApps40.0k+123

ai-website-cloner-template

JCodesMore/ai-website-cloner-template

Clone any website with one command using AI coding agents

Pushed 15 days ago.MIT LicenseJavaScriptDesign systems38.5k+1.0k

Vane

ItzCrazyKns/Vane

Vane is an AI-powered answering engine.

Pushed 2 months ago.MIT LicenseTypeScriptDeveloper tools38.0k+224