Open-source prompt-engineering software
631 open-source libraries, tools and applications tagged prompt-engineering, ranked by how closely prompt-engineering is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
631 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| noamseg/interview-coach-skill A Claude Code skill/plugin that acts as an adaptive job interview coach, covering the full job search lifecycle from JD analysis and resume… | 50 | 2267 | active |
| GammaLabTechnologies/harmonist Harmonist is a portable multi-agent orchestration framework for AI coding assistants like Cursor, Claude Code, Copilot, and Windsurf, shipp… | 66 | 2252 | active |
| mrgoonie/claudekit-skills A curated collection of Agent Skills (workflows, guardrails, and integration hints) for Claude Code, installable as a plugin marketplace. I… | 47 | 2217 | active |
| GordenSun/GordenSuperPPTSkills A set of Codex agent skills that use GPT image generation and vision to create image-format PPT slides and convert them into fully editable… | 49 | 2090 | active |
| maxritter/pilot-shell Pilot Shell is a framework that adds spec-driven planning, enforced TDD, persistent memory, and automatic quality gates to Claude Code and … | 77 | 2074 | active |
| microsoft/foundry-dev-tools Microsoft Foundry Toolkit (formerly AI Toolkit) is a Visual Studio Code extension for building, testing, and deploying AI agents and models… | 79 | 2055 | active |
| noamgat/lm-format-enforcer A Python library that enforces output formats like JSON Schema or regex on language models by filtering allowed tokens at each generation s… | 60 | 2040 | active |
| glebkudr/shotgun_code Shotgun is a desktop application that packages a local codebase into a structured context payload for LLMs, with AI-powered file selection … | 46 | 1995 | active |
| nhaouari/obsidian-textgenerator-plugin An open-source Obsidian plugin that brings generative AI text generation into the note-taking workflow, supporting providers like OpenAI, A… | 86 | 1988 | active |
| filiksyos/gitreverse GitReverse is a web application that turns any public GitHub repository into a single synthetic prompt that could have been used to vibe-co… | 60 | 1984 | active |
| glittercowboy/taches-cc-resources A curated collection of custom Claude Code resources including 27 slash commands, 9 skills, and 3 auditor subagents for structured workflow… | 47 | 1983 | active |
| aipoch/medical-research-skills A curated library of 550+ SKILL.md-compatible agent skills for medical and biomedical research, covering evidence insights, protocol design… | 70 | 1971 | active |
| huang-sir1/radiology-skills An open-source collection of 27 Claude/Codex 'skills' (modular rule files) for medical imaging research, covering radiomics, deep learning,… | 67 | 1962 | active |
| thisjam/sd-webui-oldsix-prompt A Stable Diffusion WebUI plugin that provides a categorized Chinese prompt library so users can input prompts without knowing English. It s… | 29 | 1961 | active |
| TanShilongMario/PromptFill Prompt Fill is a web-based structured prompt generation tool for AI painting platforms like GPT, Midjourney, and Nano Banana. It lets users… | 59 | 1945 | active |
| severity1/claude-code-prompt-improver A Claude Code hook plugin that intelligently improves prompts at submit time, tool use, and subagent start, injecting contextual nudges so … | 68 | 1932 | active |
| digitalinnovationone/dio-agent DIO Agent is an AI study mentor created by Digital Innovation One (DIO) that guides learners through bootcamps, courses, and coding challen… | 52 | 1919 | active |
| MrGeDiao/shuorenhua A Chinese-first rewrite skill that removes AI-generated tone (template phrasing, performative language, translationese) from text while pre… | 79 | 1891 | active |
| questflowai/investorskills An open-source library of portable, plain-text 'investor skill' packages (SKILL.md files plus investment schemas) that encode the judgment … | 55 | 1861 | active |
| YangLing0818/RPG-DiffusionMaster Official implementation of RPG (Recaption, Plan, Generate), a training-free framework that uses multimodal LLMs as prompt recaptioners and … | 26 | 1842 | active |
| hako-mikan/sd-webui-regional-prompter A custom script extension for AUTOMATIC1111's stable-diffusion-webui that lets users assign different prompts to different regions of a gen… | 73 | 1815 | active |
| onestardao/WFGY WFGY is an open-source ecosystem of protocols and tools for debugging and improving AI reasoning, RAG pipelines, and agent workflows, curre… | 77 | 1794 | active |
| MeiGen AI Design MCP An open-source MCP server that adds AI image and video generation capabilities to AI coding tools like Claude Code, Cursor, and Codex. It s… | 83 | 1787 | active |
| AIScientists-Dev/academic-humanizer A skill/plugin for AI coding agents (Claude Code, Codex, MorphMind) that edits AI-assisted academic drafts to remove generic AI-writing tel… | 51 | 1785 | active |
| Moonvy/OpenPromptStudio Open Prompt Studio (OPS) is a web-based visual editor for AIGC prompts, primarily targeting Midjourney. It provides Chinese-English prompt … | 31 | 6685 | maintenance |
| ExtensityAI/symbolicai SymbolicAI is a Python neuro-symbolic framework that blends classical programming with LLM capabilities through composable Symbol primitive… | 94 | 1777 | active |
| Nutlope/twitterbio A Next.js web application that generates Twitter/X bios using AI models (Qwen 3.5 9B and GPT OSS 20B) served via the Together AI API with s… | 68 | 1770 | active |
| crazyykhllc-bit/CyberPPT CyberPPT is a Codex Skill that converts documents, research materials, and business data into high-density, editable, consulting-style Powe… | 52 | 1770 | active |
| fish2018/YPrompt YPrompt is a self-hosted web application that uses AI-guided conversation to elicit user requirements and automatically generate profession… | 42 | 1721 | active |
| NeoLabHQ/context-engineering-kit A hand-crafted collection of Claude Code Skills and plugins implementing context engineering techniques to improve AI coding agent output q… | 78 | 1719 | active |
| legeling/PromptHub PromptHub is a local-first desktop application (Electron + React + SQLite) that serves as an all-in-one workbench for managing AI assets su… | 85 | 1716 | active |
| BayramAnnakov/claude-reflect A Claude Code plugin that captures user corrections and positive feedback via hooks, then syncs them into CLAUDE.md and AGENTS.md as perman… | 82 | 1704 | active |
| RinDig/icm-architect A Claude skill that designs processes, ideas, or problems into ICM (Interpretable Context Methodology) workspaces, where numbered folder st… | 54 | 1702 | active |
| devenjarvis/lathe Lathe is a Go CLI plus local web UI that generates hands-on, multi-part technical tutorials on demand using LLM skills run inside coding ag… | 72 | 1689 | active |
| AvdLee/Swift-Concurrency-Agent-Skill A packaged Agent Skill in the open Agent Skills/Agent Plugin format that injects expert Swift Concurrency knowledge into AI coding assistan… | 78 | 1677 | active |
| liyue-aigc/female-portrait-director A modular Codex Skill that directs and expands detailed AI female portrait prompts into coherent, camera-ready scenes, or generates images … | 67 | 1673 | active |
| feiskyer/claude-code-settings A curated collection of skills, sub-agents, and configuration templates for Claude Code, installable via the official Claude plugin marketp… | 62 | 1659 | active |
| weijunext/smart-excel-ai SmartExcel is a web application that generates Excel formulas from natural-language descriptions using the ChatGPT API with streaming respo… | 37 | 1655 | active |
| aiwaves-cn/agents Agents 2.0 is a Python framework for data-centric, self-evolving autonomous language agents based on symbolic learning. It adapts neural-ne… | 29 | 5964 | maintenance |
| langchain-ai/deepagentsjs Deep Agents (deepagentsjs) is a TypeScript library from LangChain for building controllable LLM-powered agents on top of LangGraph. It prov… | 82 | 1611 | active |
| krusemediallc/arcads-claude-code An agent skill pack and prompting library for generating AI marketing videos and images through the Arcads API, designed for use with Claud… | 60 | 1611 | active |
| ponysb/91Writing A browser-based AI novel-writing application built with Vue 3 and Element Plus that integrates user-configured LLM APIs (GPT, Claude, Gemin… | 37 | 1600 | active |
| NousResearch/autonovel An autonomous AI agent pipeline that writes, revises, evaluates, typesets, illustrates, and narrates a complete novel from a seed concept. … | 44 | 1590 | active |
| GBSOSS/skill-from-masters A skill for AI agent platforms like Claude Code and Codex that helps users create new AI skills grounded in proven methodologies from recog… | 43 | 1589 | active |
| Bklieger/infinite-bookshelf Infinite Bookshelf is a Streamlit web app that generates entire nonfiction books from a one-line prompt using Llama models on Groq. It scaf… | 32 | 1551 | active |
| Mirascope Mirascope is a Python (and TypeScript) library providing a unified, provider-agnostic interface for calling frontier LLMs like OpenAI, Anth… | 91 | 1533 | active |
| David-Kunz/gen.nvim A Neovim plugin that generates text using LLMs (primarily via Ollama) with customizable prompts. It streams model responses into editor win… | 33 | 1527 | active |
| huangserva/skill-prompt-generator A Claude Code Skills-based system that generates high-quality AI image prompts by intelligently combining elements from a 1,246-item Univer… | 49 | 1506 | active |
| actionbook/rust-skills Rust Skills is a Claude Code plugin and portable skills pack that injects a meta-cognition knowledge base for Rust development into AI codi… | 57 | 1494 | active |
| octotools/octotools OctoTools is an open-source, training-free agentic framework from Stanford that augments large language models with extensible tools for co… | 53 | 1490 | active |
| dacnay816y62-hub/cinema-dna-21x9x3 A prompt-engineering skill that translates characters, settings, genres, or a one-line plot into cinematic 21:9 triptych image-generation p… | 78 | 1481 | active |
| muyoou/st-memory-enhancement A SillyTavern extension plugin that adds structured long-term memory to AI roleplay chats using editable tables for character settings, eve… | 66 | 1478 | active |
| daymade/claude-code-skills A marketplace of production-ready skills for Claude Code, including a hardened skill-creator meta-skill for building, validating, and packa… | 78 | 1471 | active |
| helloianneo/ian-handdrawn-ppt A Codex Skill that guides AI agents to turn articles, notes, or outlines into Chinese hand-drawn technical explanation slide images (21:9 c… | 58 | 1468 | active |
| rjs/shaping-skills A collection of Claude Code skills implementing the Shape Up methodology (shaping and breadboarding) for use with an LLM. It includes docum… | 10 | 1442 | active |
| FANzR-arch/Numerologist_skills An engineering framework of AI skills for Chinese metaphysics (Qimen Dunjia, Ziwei Doushu, BaZi) that reduces LLM hallucinations by enforci… | 54 | 1422 | active |
| lishix520/academic-paper-skills A set of Claude Code skills that provide a structured pipeline for planning and writing academic papers, with a strategist skill for venue … | 40 | 1412 | active |
| robertpiosik/CodeWebChat Code Web Chat (CWC) is a free, privacy-first VS Code extension toolkit for AI-assisted coding that builds unified prompts with static conte… | 67 | 1406 | active |
| zubair-trabzada/ai-sales-team-claude A collection of 14 Claude Code skills and 5 parallel agents that turn Claude Code into an AI-powered sales team. It researches prospects, q… | 45 | 1404 | active |
| jtydhr88/ComfyUI-qwenmultiangle A ComfyUI custom node providing an interactive Three.js 3D viewport for controlling camera azimuth, elevation, and zoom. It outputs formatt… | 59 | 1402 | active |
| wuji-labs/nopua NoPUA is an agent skill that improves AI coding assistant behavior by replacing fear-based, threatening prompts with respectful, caring ins… | 71 | 1396 | active |
| explosion/spacy-llm spacy-llm is a Python library that integrates Large Language Models into spaCy NLP pipelines via a serializable llm component. It provides … | 75 | 1395 | active |
| noobnooc/agent A personal collection of portable Codex agent skills by noobnooc, each packaged as a folder with a SKILL.md entrypoint and agent metadata. … | 73 | 1381 | active |
| ziguishian/xhs-visual-director-skill An Agent Skill (Codex Skill) that acts as a 'visual director' for planning Xiaohongshu (Little Red Book) image-and-text posts. It interview… | 51 | 1379 | active |
| 1rgs/jsonformer Jsonformer is a Python library that wraps Hugging Face causal language models to generate syntactically correct JSON conforming to a given … | 30 | 4936 | maintenance |
| OpenPrompt OpenPrompt is a PyTorch-based open-source framework for prompt-learning, providing a standard, flexible pipeline of templates and verbalize… | 23 | 4903 | maintenance |
| ntegrals/10x 10x is an open-source terminal-based AI coding agent that chains multiple LLM models through multi-step 'Superpowers' workflows with smart … | 43 | 1366 | active |
| paralleldrive/sudolang SudoLang is a pseudocode-style programming language designed for collaborating with AI language models, using natural language constraints,… | 55 | 1356 | active |
| GanyuanRan/Aegis Aegis is a method pack (plugin/skills collection) that makes AI coding agents architecture-aware, baseline-first, evidence-verified, and dr… | 77 | 1347 | active |
| ace-agent/ace ACE is a Python framework for Agentic Context Engineering that lets language models self-improve by treating contexts as evolving playbooks… | 58 | 1344 | active |
| tjboudreaux/cc-thinking-skills A catalog of 28 portable Agent Skills that give AI coding agents structured reasoning procedures based on mental models like first principl… | 63 | 1335 | active |
| aws-samples/claude-prompt-generator A Python web application that generates, translates, and iteratively evaluates prompts for Anthropic Claude 3 via AWS Bedrock, including co… | 10 | 1309 | active |
| AI-Prompt-Genius/AI-Prompt-Genius AI Prompt Genius is a Chrome browser extension for curating a personal library of AI prompts with tagging, folders, import/export, and cros… | 66 | 1305 | active |
| yizhongw/self-instruct Self-Instruct is a framework and research codebase for aligning pretrained language models with instructions using data generated by the mo… | 32 | 4612 | maintenance |
| joeseesun/qiaomu-mondo-poster-design An AI-powered poster and cover design tool that generates professional-grade posters, book covers, album covers, and social media graphics … | 44 | 1287 | active |
| poetiq-ai/poetiq-arc-agi-solver A Python research codebase that reproduces Poetiq's record-breaking, leaderboard-topping submissions to the ARC-AGI-1 and ARC-AGI-2 abstrac… | 39 | 1283 | active |
| gooseworks-ai/goose-skills A library of 200+ AI agent skills and data APIs for growth and go-to-market work, installable into coding agents like Claude Code, Cursor, … | 60 | 1252 | active |
| ChristopherKahler/paul PAUL (Plan-Apply-Unify Loop) is a structured development framework for Claude Code that enforces a PLAN → APPLY → UNIFY cycle with acceptan… | 57 | 1251 | active |
| smixs/pohuy A prompt/skill package that makes AI agents respond in idiomatic Russian profanity, compressing verbose explanations into terse, expressive… | 75 | 1250 | active |
| GreatScottyMac/RooFlow RooFlow is an experimental set of YAML-based system prompts and modes for the Roo Code VS Code extension, providing persistent project cont… | 27 | 1246 | active |
| florestefano1975/comfyui-portrait-master A ComfyUI custom node suite that helps AI image creators generate detailed, professional prompts for human portraits. It provides modular n… | 53 | 1245 | active |
| mrwadams/attackgen AttackGen is a Streamlit-based cybersecurity tool that uses large language models to generate tailored incident response testing scenarios … | 92 | 1244 | active |
| RinDig/Interpretable-Context-Methodology Interpretable Context Methodology (ICM) is a Python-based methodology that uses folder structure as agent architecture, replacing framework… | 54 | 1244 | active |
| alchaincyf/x-mentor-skill An agent skill (SKILL.md package) that distills the methodologies of six top X (Twitter) creators plus open-source X algorithm weight data … | 56 | 1242 | active |
| sentient-agi/EvoSkill EvoSkill is an open-source Python framework that automatically discovers and synthesizes reusable skills from failed agent trajectories to … | 72 | 1229 | active |
| leezythu/maoxuan-skill A Claude Code skill package that distills the cognitive frameworks from Mao Zedong's Selected Works (e.g., contradiction analysis, united f… | 56 | 1229 | active |
| langchain-ai/openevals OpenEvals is a library of readymade evaluators for testing LLM applications, including LLM-as-judge evaluators and reference-based/referenc… | 86 | 1226 | active |
| NyxTides/ppt-image-first A conversation-first, image-first PPT workflow skill for AI coding CLIs (Codex, Claude Code, Opencode) that turns vague presentation reques… | 48 | 1219 | active |
| RhythmicWave/NovelForge NovelForge is an AI-assisted long-form novel writing application built in Python, using a card-based creation model with JSON Schema-driven… | 83 | 1215 | active |
| fcakyon/claude-codex-settings A curated collection of battle-tested configuration files, plugins, skills, hooks, and subagents for AI coding tools like Claude Code, Open… | 85 | 1176 | active |
| 199-biotechnologies/claude-deep-research-skill A Claude Code skill (plugin) that turns the agent into an enterprise-grade deep research engine with an 8-phase pipeline covering scoping, … | 48 | 1171 | active |
| Strands Agents Agent SOPs are markdown-based standard operating procedures that guide AI agents through complex, multi-step workflows using natural langua… | 79 | 1170 | active |
| character-ai/prompt-poet Prompt Poet is a Python library for designing LLM prompts using YAML and Jinja2 templates in a low-code approach. It renders dynamic, struc… | 51 | 1158 | active |
| agent-topia/evolving_personality JPAF is a Python framework that gives LLM agents structured, evolving MBTI personalities based on Carl Jung's psychological types. It uses … | 45 | 1149 | active |
| withkynam/vibecode-pro-max-kit A spec-driven coding harness that gives AI coding agents (Claude Code, Codex, Cursor, etc.) a plan-first workflow with gated phases, self-h… | 67 | 1143 | active |
| lee-to/ai-factory AI Factory is an npm-distributed CLI that bootstraps an AI-powered development environment in any project, installing skills, configuring M… | 82 | 1140 | active |
| viticci/shortcuts-playground-plugin Shortcuts Playground is a plugin for Claude Code and Codex that generates Apple Shortcuts from natural language descriptions. It ships a kn… | 66 | 1131 | active |
| futantan/OpenGpt OpenGpt is an open-source web platform for instantly running and creating small ChatGPT-powered prompt applications, with a browsable marke… | 39 | 3888 | maintenance |
| datadreamer-dev/DataDreamer DataDreamer is an open-source Python library for prompting LLMs, generating synthetic datasets, and training or aligning models in reproduc… | 32 | 1124 | active |
| codestable/CodeStable CodeStable is a set of lightweight skill contracts (installed as Codex/Claude plugins) that structure AI-assisted coding around requirement… | 74 | 1111 | active |