Open source prompt-engineering projects
Every project in the registry tagged prompt-engineering, ranked by real GitHub adoption.
Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
21 Lessons, Get Started Building with Generative AI
LEAKED SYSTEM PROMPTS FOR CHATGPT, CLAUDE, GEMINI, GROK, PERPLEXITY, CURSOR, LOVABLE, REPLIT, AND MORE! - AI SYSTEMS TRANSPARENCY FOR ALL! 👐
Agent skill that removes signs of AI-generated writing from text
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simpl
Structured Outputs
A Claude skill that writes the accurate prompts for any AI tool. Zero tokens or credits wasted. Full context and memory retention
Build high-quality LLM apps - from prototyping, testing to production deployment and monitoring.
🦸 AI 编程超能力 · 中文增强版 — superpowers（250k+ ⭐）完整汉化 + 4 个中国原创 skills，让 Claude Code / Copilot CLI / Hermes Agent / Cursor / Windsurf / Kiro / Gemini CLI / Qoder 等 26
The open document intelligence platform for builders and hackers - DMS for the agentic world
Related tags
Frequently asked questions
How many open source prompt-engineering projects are there?
This registry tracks 10 projects tagged prompt-engineering, with 435,837 GitHub stars between them. The most-adopted is ponytail at 141,230 stars.
Are these prompt-engineering projects free to use?
Yes — 10 of the 10 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which prompt-engineering project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these prompt-engineering projects still maintained?
10 of the 10 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.