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 |
|---|---|---|---|
| Parlant Parlant is an open-source Python framework that acts as an interaction control harness for building reliable, customer-facing LLM agents. I… | 78 | 18298 | active |
| LangChain LangChain.js is a TypeScript framework for building LLM-powered applications, providing standard interfaces for agents, models, embeddings,… | 95 | 18284 | active |
| camel-ai/camel CAMEL is an open-source Python framework for building multi-agent AI systems, providing agents, role-based societies, memory, RAG pipelines… | 82 | 17834 | active |
| latent-spaces/brag A Claude Code skill (installable in other AI coding agents) that turns a project into a short, shareable launch video with music, motion, a… | 59 | 16998 | active |
| coderamp-labs/gitingest Gitingest turns any Git repository into a prompt-friendly text digest of its codebase, suitable for feeding into LLMs. It is available as a… | 68 | 15879 | active |
| yusufkaraaslan/Skill_Seekers Skill Seekers is a Python CLI toolkit and MCP server that converts documentation sites, GitHub repos, PDFs, codebases, notebooks, and other… | 83 | 15096 | active |
| ConardLi/easy-dataset Easy Dataset is a self-hosted web application for building high-quality structured datasets for LLM fine-tuning, RAG, and model evaluation.… | 66 | 14989 | active |
| llmware-ai/llmware llmware is a Python framework for building enterprise RAG pipelines and LLM-based applications using small, specialized open-source models.… | 90 | 14816 | active |
| aiming-lab/AutoResearchClaw AutoResearchClaw is a Python framework for fully autonomous, self-evolving research that takes an idea from chat to a generated paper using… | 70 | 14582 | active |
| andrewyng/context-hub Context Hub (chub) is an npm-distributed CLI that gives coding agents curated, versioned, language-specific API documentation stored as mar… | 54 | 13976 | active |
| Puck Puck is a modular, open-source visual editor for React that lets developers embed drag-and-drop page building into their own applications u… | 93 | 13423 | active |
| LangChain4j LangChain4j is an open-source Java library for building LLM-powered applications on the JVM, providing a unified API over 20+ LLM providers… | 97 | 13266 | active |
| Arize Phoenix Arize Phoenix is an open-source AI observability and evaluation platform for tracing, debugging, and evaluating LLM applications. It suppor… | 95 | 11875 | active |
| tensorzero/tensorzero TensorZero is an open-source LLMOps platform that unifies an LLM gateway, observability, evaluation, optimization, and experimentation behi… | 10 | 11716 | active |
| handsomestWei/patent-disclosure-skill A Python-based agent skill for Chinese patent work that mines patentable points from project materials, drafts disclosure documents (invent… | 60 | 11694 | active |
| Pocket Flow Pocket Flow is a minimalist 100-line LLM framework in Python with zero dependencies, modeling LLM applications as a graph of nodes connecte… | 51 | 11208 | active |
| ChatGPTBox-dev/chatGPTBox A browser extension that deeply integrates ChatGPT into your browsing experience across Chrome, Edge, Firefox, Safari, and Android. It prov… | 91 | 10757 | active |
| chathub-dev/chathub ChatHub is an all-in-one AI chat client, originally a Chrome/Edge browser extension and now also a web app and mobile/desktop apps, that le… | 58 | 10658 | active |
| sigoden/aichat AIChat is an all-in-one command-line LLM client written in Rust that connects to 20+ providers including OpenAI, Claude, Gemini, and Ollama… | 60 | 10471 | active |
| Narcooo/inkos InkOS is an AI agent system for story creation and multilingual translation, supporting long-form novels, scripts, interactive games, and I… | 79 | 10222 | active |
| Vincentwei1021/video-shotcraft An AI agent skill that turns Claude Code or Codex into a motion-design studio for producing cinematic product, promo, and demo videos using… | 73 | 10207 | active |
| tmc/langchaingo Langchaingo is the Go language port of LangChain, providing composable building blocks for writing LLM-powered applications in Go. It offer… | 87 | 9712 | active |
| oso95/scroll-world An agent skill (SKILL.md-compatible plugin) for Claude Code, Codex, and similar coding agents that generates immersive scroll-scrubbed 'fly… | 53 | 9461 | active |
| BAML BAML is a domain-specific programming language for building LLM agents, with a Rust-like type system, typed errors, built-in tests/evals, a… | 92 | 9423 | active |
| shaxiu/XianyuAutoAgent An AI-powered customer service bot for the Xianyu (Goofish) secondhand marketplace that provides 24/7 automated message handling. It uses L… | 56 | 9275 | active |
| shadcn/improve An agent skill that audits a codebase using a capable LLM and writes self-contained markdown implementation plans for cheaper models to exe… | 56 | 9187 | active |
| nexu-io/html-anything HTML Anything is a local-first, agentic HTML editor that drives coding-agent CLIs you already have authenticated (Claude Code, Cursor, Code… | 57 | 8934 | active |
| freecodexyz/free-code A community fork of Anthropic's Claude Code terminal AI coding agent, rebuilt from an exposed source snapshot with telemetry removed, secur… | 54 | 8757 | active |
| AI4Finance-Foundation/FinRobot FinRobot is an open-source AI agent platform for financial applications built on large language models, unifying LLMs, reinforcement learni… | 78 | 8140 | active |
| logancyang/obsidian-copilot Copilot for Obsidian is an Obsidian community plugin that adds AI chat and agent capabilities to your note vault, integrating opencode, Cla… | 94 | 7864 | active |
| basketikun/infinite-canvas An open-source infinite canvas workbench for AI-driven visual creation, combining canvas orchestration, AI image generation, reference-imag… | 79 | 7369 | active |
| zai-org/GLM-5 GLM-5 is a family of open-weight large language models from Z.ai (Zhipu AI), including the flagship GLM-5.2 with 1M-token context and the m… | 60 | 7329 | active |
| Zipstack/unstract Unstract is an open-source, LLM-driven platform that extracts structured JSON data from unstructured documents such as PDFs, images, and sc… | 87 | 7270 | active |
| op7418/guizang-social-card-skill A Claude Code / Codex agent skill that generates Xiaohongshu (Rednote) carousel images and WeChat 21:9 + 1:1 cover pairs from articles, not… | 51 | 7222 | active |
| XBuilderLAB/cheat-on-content A Python-based agent skill that turns content creation into a calibrated prediction workflow: score each post, blind-predict its performanc… | 58 | 7200 | active |
| NVIDIA-NeMo/Guardrails NVIDIA NeMo Guardrails is an open-source Python toolkit for adding programmable guardrails to LLM-based conversational applications. It sit… | 90 | 7181 | active |
| htdt/godogen A generator that publishes thin game repos where AI coding agents (Claude Code or Codex) autonomously build complete games for Godot 4, Bev… | 60 | 7137 | active |
| wbh604/UZI-Skill UZI-Skill is a Python-based AI agent skill/plugin that performs deep stock analysis for A-share, Hong Kong, and US markets using 22 data di… | 73 | 7083 | active |
| dataease/SQLBot SQLBot is an open-source conversational data analysis (ChatBI) system that converts natural language questions into SQL queries using large… | 86 | 6880 | active |
| Forget-C/Jellyfish Jellyfish is a self-hosted, end-to-end production workspace for AI-generated short dramas, covering script input, storyboard breakdown, cha… | 68 | 6727 | active |
| Genkit Genkit is an open-source framework by Google for building full-stack, AI-powered agentic applications in JavaScript/TypeScript, Go, Python,… | 87 | 6524 | stable |
| Eigenwise/atomic-agents Atomic Agents is a lightweight, modular Python framework for building agentic AI pipelines and applications from small, composable componen… | 91 | 6284 | active |
| Helicone Helicone is an open-source LLM observability platform and AI gateway that logs, monitors, and analyzes LLM API requests with a one-line int… | 78 | 6224 | active |
| jihe520/MathModelAgent MathModelAgent is a multi-agent LLM application that automates mathematical modeling competitions end-to-end: it analyzes a problem, builds… | 87 | 6220 | active |
| PrefectHQ/marvin Marvin is a Python framework for building AI applications with LLMs, offering structured-output utilities (extract, cast, classify, generat… | 85 | 6198 | active |
| UfoMiao/zcf ZCF (Zero-Config Code Flow) is a Node.js CLI that provides one-click setup and configuration for AI coding assistants like Claude Code and … | 76 | 6083 | active |
| fengshao1227/ccg-workflow CCG Workflow is a multi-model orchestration engine for Claude Code that coordinates Codex CLI, Gemini CLI, and Antigravity CLI from a singl… | 70 | 5939 | active |
| samchon/typia Typia is a TypeScript transformer library that compiles pure TypeScript types into super-fast runtime validators, JSON serializers/parsers,… | 93 | 5921 | active |
| AidLux (AidLearning) AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling… | 63 | 5812 | active |
| PySpur-Dev/pyspur PySpur is an open-source visual playground and builder for AI agent workflows, letting engineers build agents via drag-and-drop UI or Pytho… | 62 | 5792 | active |
| dotnet/skills A curated collection of agent skills and custom agents from the .NET team, packaged as plugins for AI coding agents like Copilot CLI and Cl… | 63 | 5655 | active |
| 狗头军师 (Goutoujunshi) Goutoujunshi is a Codex Skill (AI agent plugin) that acts as a relationship advisor, first validating the user's emotions, then analyzing r… | 56 | 5619 | active |
| buildermethods/agent-os Agent OS is a lightweight, open-source system for documenting coding standards from your codebase and injecting them into AI coding agents … | 71 | 5481 | active |
| BuilderIO/ai-shell AI Shell is an open-source CLI tool that converts natural language prompts into shell commands using OpenAI, with options to run, revise, o… | 54 | 5301 | active |
| Kiln-AI/Kiln Kiln is a free desktop app and MIT-licensed Python library for the full AI development loop: evals, prompt optimization, RAG, agents, fine-… | 91 | 5207 | active |
| elementalsouls/Claude-BugHunter A Claude Code skill bundle that turns Claude into a bug-hunting and red-team assistant, with 83 skills, 15 slash commands, and 681 disclose… | 75 | 5041 | active |
| LangWatch LangWatch is an open-source LLMOps platform for LLM evaluation, AI agent testing, tracing, and production observability. It combines agent … | 91 | 4983 | active |
| FellouAI/eko Eko is a production-ready JavaScript framework for building reliable AI agents and agentic workflows from natural language, running in both… | 57 | 4961 | active |
| FareedKhan-dev/all-agentic-architectures A Python library packaging 35 production-grade agentic AI architectures (Reflexion, LATS, GraphRAG, MemGPT, Voyager, etc.) as runnable Arch… | 57 | 4600 | active |
| Embabel Agent Framework Embabel Agent is an agentic AI framework for the JVM, written in Kotlin with first-class Java and Spring Boot support. It provides typed, g… | 87 | 4513 | active |
| zLanqing/codex-claude-academic-skills A collection of three academic skill packages for Claude Code and Codex covering paper writing, academic Word/PPT document generation, and … | 48 | 4507 | active |
| JimLiu/baoyu-design A portable Agent Skill that packages Claude Design's UI design engine for local coding agents like Cursor, Claude Code, and Claude Desktop.… | 79 | 4403 | active |
| meta-llama/PurpleLlama Purple Llama is Meta's umbrella project of tools and benchmarks for assessing and improving the security of large language models. It inclu… | 68 | 4401 | active |
| algorithmicsuperintelligence/optillm OptiLLM is an OpenAI API-compatible optimizing inference proxy that applies 20+ inference-time techniques (e.g., Mixture of Agents, MCTS, c… | 85 | 4307 | active |
| SylphAI-Inc/AdalFlow AdalFlow is a PyTorch-like Python library for building and auto-optimizing LLM application workflows such as chatbots, RAG pipelines, and a… | 62 | 4220 | active |
| nageoffer/ragent Ragent AI is a production-grade Java platform for building Agentic RAG applications, covering document ingestion, hybrid retrieval (vector,… | 76 | 4164 | active |
| Langroid Langroid is a Python framework for building LLM-powered applications using multi-agent programming, where agents encapsulate LLM conversati… | 94 | 4120 | active |
| CommandCodeAI/command-code Command Code is a terminal-based AI coding agent that builds full-stack projects, fixes bugs, writes tests, and refactors code. Its disting… | 66 | 4112 | active |
| hanshuaikang/AI-Media2Doc A self-hostable web application that uses AI large language models to convert video and audio into various document styles such as Xiaohong… | 52 | 4052 | active |
| Codex-X Codex-X is a cross-platform desktop GUI tool built with Tauri 2, React, and Rust for managing OpenAI Codex desktop and CLI configurations. … | 79 | 4036 | active |
| mcncarl/yichen-skills A collection of Claude Code and Codex skills for content creators, covering writing workflows, X Articles publishing, WeChat/WeCom data cap… | 66 | 4029 | active |
| isjiamu/gzh-design-skill An AI-agent skill (for Claude Code, Codex, Cursor) that converts Markdown into paste-ready WeChat Official Account (gongzhonghao) HTML with… | 75 | 4019 | active |
| Rapid-MLX Rapid-MLX is a local LLM inference engine for Apple Silicon Macs built on MLX, exposing a drop-in OpenAI/Anthropic-compatible API. It offer… | 79 | 4002 | active |
| Dimillian/Skills A curated collection of 16 reusable skill definitions for OpenAI Codex-style AI coding agents, covering Apple platform development, GitHub … | 46 | 3994 | active |
| Raptor RAPTOR is an autonomous offensive/defensive security research framework built on top of Claude Code, chaining static analysis, binary analy… | 75 | 3916 | active |
| Polymarket/agents A Python developer framework and utility set for building AI agents that trade autonomously on Polymarket prediction markets. It integrates… | 10 | 3803 | active |
| Deepractice/PromptX PromptX is an AI Agent Context Platform built on the Model Context Protocol (MCP) that injects professional AI roles, a cognitive memory sy… | 66 | 3686 | active |
| samber/cc-skills-golang A curated collection of 46 Go-specific agent skills (reusable instruction sets) for AI coding assistants like Claude Code, Codex, Gemini CL… | 77 | 3337 | active |
| op7418/NanoBanana-PPT-Skills An AI-powered tool that generates high-quality presentation slides as images using Google's Nano Banana Pro (Gemini image model), with opti… | 41 | 3266 | active |
| Josh-XT/AGiXT AGiXT is an open-source AI agent automation platform that orchestrates instruction management and complex task execution across multiple AI… | 82 | 3216 | active |
| LLM for Zotero A Zotero plugin that integrates large language models into the Zotero PDF reader, enabling grounded paper chat, summarization, figure extra… | 78 | 3184 | active |
| SynkraAI/aiox-core AIOX (AI-Orchestrated System) is an open-source framework for orchestrating specialized AI agents, workflows, and CLI-first experiences for… | 80 | 3125 | active |
| bergside/design-md-chrome A Chrome extension that extracts visual styles (typography, colors, spacing, shadows, motion) from any website and generates DESIGN.md or S… | 62 | 2972 | active |
| ax-llm/ax Ax is a TypeScript-first LLM programming framework implementing the DSPy model, providing typed signatures, agents, flows, and optimizers l… | 93 | 2961 | active |
| zjunlp/EasyEdit EasyEdit is an easy-to-use knowledge editing framework for large language models, supporting methods that modify model parameters or steer … | 74 | 2929 | active |
| rohitg00/pro-workflow A Claude Code plugin and workflow system that gives AI coding agents self-correcting persistent memory, FTS5-indexed research wikis, and qu… | 73 | 2885 | active |
| teaql/teaql-agent-kit TeaQL Agent Kit is a model-mediated harness for coding agents that inserts an inspectable, executable domain model (KSML) between requireme… | 83 | 2813 | active |
| openlit/openlit OpenLIT is an open-source AI engineering platform providing OpenTelemetry-native LLM observability, evaluations, guardrails, prompt managem… | 86 | 2792 | active |
| HarleyCoops/Math-To-Manim-lfs-archive A Python project that turns math and physics questions into reasoned visual explanations rendered as Manim animations and study notes. It u… | 80 | 2789 | active |
| notlikeDev/CCPlugins CCPlugins is a collection of professional slash commands and plugins for the Claude Code CLI that automate repetitive development tasks. It… | 10 | 2775 | active |
| stellarlinkco/myclaude A multi-agent orchestration workflow system for AI coding assistants that coordinates backends like Claude Code, Codex, Gemini, and OpenCod… | 57 | 2751 | active |
| Danghuangshang AI Court Danghuangshang is an open-source multi-agent collaboration system built on the OpenClaw framework, modeling an AI 'imperial court' after Mi… | 49 | 2703 | active |
| prateek-chaubey/YTPro YTPro is an alternative YouTube client for Android built with a WebView and JavaScript injection, offering ad blocking, background playback… | 80 | 2652 | active |
| Haojae/scipilot-figure-skill A Claude Code / Codex / Cursor skill that acts as a scientific data visualization advisor, profiling data and recommending the right chart … | 50 | 2651 | active |
| kayba-ai/agentic-context-engine Agentic Context Engine (ACE) is a Python library that lets LLM-based agents learn from experience by maintaining and evolving an evolving c… | 82 | 2602 | active |
| Griptape Griptape is a modular Python framework for building generative AI applications, providing abstractions for agents, pipelines, workflows, RA… | 92 | 2581 | active |
| fogsightai/fogsight Fogsight is an open-source AI agent and animation engine powered by large language models that turns abstract concepts or words into polish… | 63 | 2561 | active |
| kingkongshot/Pensieve Pensieve is a self-growing project memory system for AI coding agents, implemented as a skill that replaces a static CLAUDE.md with a four-… | 52 | 2514 | active |
| Modern Web Guidance A set of agent skills and an npm CLI from the Google Chrome and Microsoft Edge teams that embeds curated web platform best practices and br… | 82 | 2475 | active |
| subsy/ralph-tui Ralph TUI is an AI Agent Loop Orchestrator delivered as a terminal UI (TUI) that runs AI coding agents like Claude Code, OpenCode, and Fact… | 72 | 2447 | active |