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Prompt Engineering Tools

Utilities and skills that write, fix, or optimize prompts for LLMs, coding agents, and image/video generators.

76 projects

See methodology for ranking rules; order uses public GitHub metrics within this scenario.

21–40 of 76

Rank Project Stars Forks
21 agent-os

Agent OS is a system for injecting your codebase standards and writing better specs for spec-driven development.

5.3K 831
22 awesome-ai-system-prompts

🧠 Curated collection of system prompts for top AI tools. Perfect for AI agent builders and prompt engineers. Incuding: ChatGPT, Claude, Perplexity, Manus, Claude-Code, Loveable, v0, Grok, same new, windsurf, notion, and MetaAI.

6.2K 904
23 ell

A language model programming library.

5.9K 341
24 hermes-agent-self-evolution

⚒ Evolutionary self-improvement for Hermes Agent — optimize skills, prompts, and code using DSPy + GEPA

5.2K 607
25 poml

Prompt Orchestration Markup Language

5.0K 257
26 tree-of-thought-llm

[NeurIPS 2023] Tree of Thoughts: Deliberate Problem Solving with Large Language Models

6.1K 626
27 OpenPromptStudio

OPS Open Prompt Studio

6.7K 739
28 awesome-notebookLM-prompts

A curated collection of the strongest NotebookLM slide prompts sourced from the real creative underground . Your go-to resource for AI powerpoint :P

4.6K 667
29 codex-keysmith

Versioned Codex instruction deployment with preview, ownership manifests, hook isolation, scenario evaluation, and recovery.

4.1K 645
30 PromptEnhancer

[CVPR 2026] PromptEnhancer is a prompt-rewriting tool, refining prompts into clearer, structured versions for better image generation.

3.8K 326
31 pezzo

🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.

3.3K 280
32 tree-of-thoughts

Plug in and Play Implementation of Tree of Thoughts: Deliberate Problem Solving with Large Language Models that Elevates Model Reasoning by atleast 70%

4.6K 376
33 PromptWizard

Task-Aware Agent-driven Prompt Optimization Framework

4.0K 353
34 hve-core

A refined collection of Hypervelocity Engineering components (instructions, prompts, agents, and skills) to start your project off right, or upgrade your existing projects to get the most out of GitHub Copilot

1.4K 278
35 ChainForge

An open-source visual programming environment for battle-testing prompts to LLMs.

3.0K 255
36 unlazy

Anti-laziness skill for AI agents: Depth Tree method splits tasks N layers deep, with runnable gates to enforce completion discipline.

2.8K 164
37 seedance2-skill

skill to create best prompts for generating videos with seedance2.0

3.5K 326
38 vibe-coding-prompt-template

Templates and workflow for generating PRDs, Tech Designs, and MVP and more using LLMs for AI IDEs

2.9K 370
39 prompttools

Open-source tools for prompt testing and experimentation, with support for both LLMs (e.g. OpenAI, LLaMA) and vector databases (e.g. Chroma, Weaviate, LanceDB).

3.1K 257
40 yao-open-prompts

Practical bilingual AI prompt library for prompt engineering, work, learning, content, marketing, and everyday use.

2.8K 453
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