Top 23 openai Open-Source Projects

1. markitdown

   1 38 189,562 9.1 Python

   Python tool for converting files and office documents to Markdown.

   

   Project mention: PDF to markdown for LLMs | dev.to | 2026-10-06

   Each one is a few lines. MarkItDown, from Microsoft:

2. AppSignal

   www.appsignal.com sponsored

   Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.

   

3. AutoGPT

   2 194 187,693 9.9 Python

   AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.

   

   Project mention: Agents 101: Reasoning, Actions & Autonomy | dev.to | 2026-05-11

   AutoGPT (agpt.co): Open-source autonomous agent framework, released in 2023. Pioneering example of general-purpose agent architecture; known for demonstrating both promise and limitations of autonomous systems.

4. dify

   3 55 158,006 10.0 TypeScript

   Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.

   

   Project mention: Bind for 0.0.0.0:5432 failed: port is already allocated - find port clashes before you run docker compose up | dev.to | 2026-10-11

   A .env DB_PORT is the port you connect to, so changing it does not move the binding (dify#14442)

5. open-webui

   4 71 154,172 10.0 Python

   User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

   

   Project mention: Open WebUI before 0.11.4: any website you visit could take your session token, and your scanner won't tell you | dev.to | 2026-10-10

   On 27 and 28 September 2026, Open WebUI published a batch of at least 15 security advisories. The list is here. Every one is fixed in 0.11.4. If you run Open WebUI for yourself, your family or a team, check your version: it's under Settings > About.

6. langchain

   5 104 147,605 9.9 Python

   The agent engineering platform.

   

   Project mention: Why does my vector DB retrieval keep returning duplicate noise for my chat agent, and how to fix it? | dev.to | 2026-10-07

   In langchain-qdrant, LangChain's lambda_mult reaches Qdrant as its diversity, so the direction flips, as an open LangChain bug report records. At 0.5 the two readings coincide; the trap opens when you move it.

7. generative-ai-for-beginners

   6 15 121,057 9.6 Jupyter Notebook

   21 Lessons, Get Started Building with Generative AI

   

   Project mention: AI Agents Roadmap 2026: 10 Free Courses in the Right Order | dev.to | 2026-09-30

   Generative AI for Beginners (Microsoft): 21 lessons on prompt engineering, calling LLMs from code, and building chat and search apps. https://github.com/microsoft/generative-ai-for-beginners

8. vllm

   7 131 93,391 10.0 Python

   A high-throughput and memory-efficient inference and serving engine for LLMs

   

   Project mention: How vLLM CUDA Kernels Write and Read the Paged KV Cache | dev.to | 2026-10-09

   Source: vLLM cache kernels at the referenced commit. The Chinese edition contains the original walkthrough. This DEV edition is a shorter adaptation with a new illustrative mapping example.

9. SaaSHub

   www.saashub.com sponsored

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. ragflow

    8 21 91,893 10.0 Go

    RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

    

    Project mention: Up to date and still affected: Flowise 3.1.4 and RAGFlow 0.27.2 have advisories with no fix yet | dev.to | 2026-10-11

    GHSA-c6q8-23rp-32cv (High, 7.1, published 5 October 2026) affects 0.25.2 through 0.27.2: any signed-in user or API key holder who knows an agent's ID can run another user's private agent through the OpenAI-compatible endpoint and read its output. No fixed release, no CVE ID. The 1.0.0-rc1 pre-release (29 September) came out before the advisory, which doesn't say whether rc1 is affected.

11. OpenHands

    9 45 90,449 10.0 TypeScript

    🙌 OpenHands: AI-Driven Development

    

    Project mention: 300+ languages doesn't mean what you think: three tiers of code understanding | dev.to | 2026-08-08

    I am not the first person to look at this. aider evaluated stack-graphs and went with tree-sitter tags plus PageRank instead (#534). So did OpenHands (#742) and SWE-agent (#38). Three serious teams reached the same conclusion: too much work, unmaintained upstream, not worth it.

12. LobeHub

    10 20 83,080 10.0 TypeScript

    The ultimate space for work and life — to find, build, and collaborate with agent teammates that grow with you.

    

    Project mention: Show HN: AI Roundtable – Let 200 models debate your question | news.ycombinator.com | 2026-03-24

    You can set this up yourself with API keys to the corresponding providers and creating an Agent Group in https://github.com/lobehub/lobehub. Agent groups allow you to easily create a room of agents and have them discuss any of your topics. Easily make agents with types and skills, it even assists in drafting starting prompts and even team members depending what your query (and selected model) is.

    You can self-host as well, but not via desktop app. Sever setup required.

    Be careful of your token context, you can easily rack up costs if you leave Opus selected as the model and get lost in some rabbit hole of results.

    Enjoy enjoy!

13. Prompt-Engineering-Guide

    11 106 78,900 8.3 MDX

    🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.

    

    Project mention: Text-to-Image APIs Explained: Node.js Backend Trade-offs for Property Marketing | dev.to | 2026-09-30

    Prompt Engineering Guide: https://www.promptingguide.ai

14. unsloth

    12 40 77,749 10.0 Python

    Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4, FLUX and more.

    

    Project mention: Self-Hosted Deep Research Systems: 12 Tools Compared | dev.to | 2026-09-25

    Unsloth Studio is developed by the Unsloth team as part of the broader Unsloth ecosystem. Originally best known for efficient model fine-tuning, Unsloth has expanded Studio into a local AI environment for inference, chat, tools, RAG, model management, and now Deep Research.

15. openai-cookbook

    13 248 76,461 9.1 Jupyter Notebook

    Examples and guides for using the OpenAI API

    

    Project mention: The 7 AI Repositories I Starred This Month | dev.to | 2026-08-16

    Repository: https://github.com/openai/openai-cookbook

16. headroom

    14 9 74,438 10.0 Python

    Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

    

    Project mention: GitHub AI Repos ประจำสัปดาห์: สัปดาห์ที่ agent มีด่านตรวจของตัวเอง (7 ต.ค. 2026) | dev.to | 2026-10-10

    [1] GitHub Trending, weekly, 2026, https://github.com/trending?since=weekly [2] GitHub Trending, รายภาษา (Go, Python, TypeScript) weekly และ monthly, 2026, https://github.com/trending/go?since=weekly [3] GitHub Ranking AI, Top 100 AI Agents, 2026, https://raw.githubusercontent.com/yuxiaopeng/Github-Ranking-AI/main/Top100/AI%20Agents.md [4] NVIDIA/OpenShell, README, 2026, https://github.com/NVIDIA/OpenShell [5] NVIDIA OpenShell documentation, 2026, https://docs.nvidia.com/openshell/latest/index.html [6] NVIDIA/OpenShell, releases, v0.1.2, 28 กันยายน 2026, https://github.com/NVIDIA/OpenShell/releases [7] ifixai-ai/iFixAi, README, 2026, https://github.com/ifixai-ai/iFixAi [8] mvschwarz/openrig, README, 2026, https://github.com/mvschwarz/openrig [9] mvschwarz/openrig, releases, v0.6.5, 4 ตุลาคม 2026, https://github.com/mvschwarz/openrig/releases [10] cursor/plugins, README, 2026, https://github.com/cursor/plugins [11] anthropics/knowledge-work-plugins, README, 2026, https://github.com/anthropics/knowledge-work-plugins [12] JuliusBrussee/caveman, README, 2026, https://github.com/JuliusBrussee/caveman [13] Adeyemi, M. D., Rossi, R. A., Dernoncourt, F., "CAVEWOMAN: How Large Language Models Behave Under Linguistic Input and Output Compression", arXiv 2606.24083, 2026, https://arxiv.org/abs/2606.24083 [14] Shiryaev, D., "Does Speaking to Agents Like Cavemen Really Save 65% of Tokens? We Test", JetBrains AI Blog, 2026, https://blog.jetbrains.com/ai/2026/07/speak-to-ai-agents-like-cavemen-tosave-tokens/ [15] headroomlabs-ai/headroom, README, 2026, https://github.com/headroomlabs-ai/headroom [16] VectifyAI/PageIndex, README, 2026, https://github.com/VectifyAI/PageIndex [17] VectifyAI/PageIndex, releases, v0.2.21, 1 ตุลาคม 2026, https://github.com/VectifyAI/PageIndex/releases

17. oh-my-openagent

    15 17 69,901 10.0 TypeScript

    OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

    

    Project mention: Oh-My-Openagent | news.ycombinator.com | 2026-09-02

18. system_prompts_leaks

    16 14 69,252 9.7 Python

    Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.

    

    Project mention: What AI Chatbots Are Told Before You Type: A Developer's Guide to the system_prompts | dev.to | 2026-09-15

    git clone https://github.com/asgeirtj/system_prompts_leaks.git cd system_prompts_leaks # See how different products talk about tool usage grep -ril "tool" --include="*.md" . | head -20 # Compare formatting rules across vendors grep -ri "markdown" --include="*.md" . | less

19. gpt4free

    17 45 66,764 9.8 Python

    The official gpt4free repository | various collection of powerful language models | opus 4.6 gpt 5.3 kimi 2.5 deepseek v3.2 gemini 3

    

20. OpenMontage

    18 11 65,695 9.5 Python

    World's first open-source, agentic video production system. 12 production pipelines, 100+ tools, 700+ agent skill and production-knowledge files. Turn your AI coding assistant into a full video production studio.

    

    Project mention: Open Source Highlights September 2026: 7 Projects You Should Know | dev.to | 2026-09-19

    github.com/calesthio/OpenMontage

21. litellm

    19 139 60,924 10.0 Python

    The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]

    

    Project mention: Cryptominers Are Targeting AI Servers: 5 Checks for Developers | dev.to | 2026-10-08

    The maintainer's advisory identifies affected versions as 1.74.2 up to, but excluding, 1.83.7. The flaw allowed a caller with a valid, low-privilege API key to execute commands through MCP test endpoints. Version 1.83.7 introduced the fix.

22. CLIProxyAPI

    20 6 54,763 10.0 Go

    Wrap Antigravity, ChatGPT Codex, Claude Code, Grok Build, Muse Code, Devin as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini Series, GPT Series, Grok Series, Claude model through API

    

    Project mention: Gemini 3.8 Flash | news.ycombinator.com | 2026-09-02

23. ChatGPT

    21 54 54,462 5.0 Rust

    ❄️ ChatGPT Desktop Application (Mac, Windows and Linux)

    

    Project mention: ChatGPT VS BotVa - a user suggested alternative | libhunt.com/r/ChatGPT | 2026-03-23

24. whisper.cpp

    22 214 54,199 9.9 C++

    Port of OpenAI's Whisper model in C/C++

    

    Project mention: One HTML File, Zero Requests: Building a Read-Along Player With Word-Level Highlighting | dev.to | 2026-10-04

    As before, thanks to the stack that makes a one-person product possible: whisper.cpp, Kokoro, Qwen3-TTS and mlx-audio.

25. CL4R1T4S

    23 9 51,061 7.4

    LEAKED SYSTEM PROMPTS FOR CHATGPT, CLAUDE, GEMINI, GROK, PERPLEXITY, CURSOR, LOVABLE, REPLIT, AND MORE! - AI SYSTEMS TRANSPARENCY FOR ALL! 👐

    

    Project mention: GPT-6 Astra System Prompt | news.ycombinator.com | 2026-09-10

26. SaaSHub

    www.saashub.com sponsored

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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