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AI Tools Software & Alternatives

code completion and review tools. AI Skills

ECC

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

211.3K stars open source
AI Tools AI Agents Developer Tools

Hermes Agent

The agent that grows with you

188.1K stars open source
AI Tools AI & Machine Learning AI Agents

Markitdown

Python tool for converting files and office documents to Markdown.

148.9K stars open source
AI Tools Developer Tools Utilities & System

Cc Switch

A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Gemini CLI & Hermes Agent. Only official website: ccswitch.io

95.9K stars open source
AI Tools AI Agents

Ui Ux Pro Max Skill

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

89.2K stars open source
AI Tools UI Design & Prototyping

Awesome Design Md

A collection of DESIGN.md files analysis by popular brand design systems. Drop one into your project and let coding agents generate a matching UI.

88.7K stars open source
AI Tools Design Systems & Tokens

Caveman

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

70.4K stars open source
AI Tools AI & Machine Learning

Awesome Claude Skills

🎯 The definitive collection of 50+ verified Awesome Claude Skills for Claude Code, Claude.ai, and API. Boost productivity with TDD, debugging, git workflows, document processing,... Read More

63.8K stars open source
AI Tools Workflow Automation AI Agents

Rtk

CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

60.4K stars open source
AI Tools Terminal & CLI Tools

Context7

Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors

57K stars open source
AI Tools API Tools

Awesome Claude Code

A curated list of awesome skills, hooks, slash-commands, agent orchestrators, applications, and plugins for Claude Code by Anthropic

46K stars open source
AI Tools AI Agents

System Prompts Leaks

Extracted system prompts from Anthropic - Claude Code, Claude Design, Opus 4.8, Sonnet 4.6. OpenAI - ChatGPT 5.5 Thinking, GPT 5.5 Instant, Codex, Google - Gemini - 3.5 Flash, 3.1... Read More

41.5K stars open source
AI Tools Code Quality & Linting

Taste Skill

Taste-Skill - gives your AI good taste. stops the AI from generating boring, generic slop

39K stars open source
AI Tools AI & Machine Learning AI Agents

Harness

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

36.6K stars open source
AI Tools CI / CD AI & Machine Learning

Impeccable

The design language that makes your AI harness better at design.

36.6K stars open source
AI Tools Design Systems & Tokens Design & Creative

Last30days Skill

AI agent skill that researches any topic across Reddit, X, YouTube, HN, Polymarket, and the web - then synthesizes a grounded summary

36.4K stars open source
AI Tools AI Agents Social Media Management

Obsidian Skills

Agent skills for Obsidian. Teach your agent to use Obsidian CLI and open formats including Markdown, Bases, JSON Canvas.

35K stars open source
AI Tools

Continuedev/continue

⏩ Create, share, and use custom AI code assistants with our open-source IDE extensions and hub of models, rules, prompts, docs, and other building blocks

33.6K stars open source
AI Tools Code Editors & IDEs

Tabby

A friendly tool to manage debt

33.6K stars open source
AI Tools Code Editors & IDEs LLM Tools & Chat UIs

Prompt Optimizer

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

30.6K stars open source
AI Tools CMS Plugins & Extensions

Gitleaks

Find secrets with Gitleaks 🔑

27.6K stars open source
AI Tools Vulnerability Scanning

Repomix

📦 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... Read More

26.1K stars open source
AI Tools Developer Tools

About AI Tools Software

Best open source AI Tools & assistant alternatives.