01.AI Yi open and commercial LLMs.
Freemiumyi
Open-Source AI Tools and Models
Open-source AI tools let you run models on your own hardware or server, inspect the code, and customise behaviour without per-message fees. They are popular with developers, researchers, privacy-conscious teams and hobbyists who want local chat assistants, image generation, speech recognition or retrieval pipelines that keep data in-house.
Self-hosting trades subscription cost for setup effort and hardware: larger models need a capable GPU or plenty of RAM, while smaller quantised models run on a laptop. Check each project’s licence, since “open weights” models may restrict commercial use, and follow security updates when exposing a self-hosted service to the internet.
How we build this list: every entry on this page comes from the Free AI Shelf directory of 50 hand-checked open-source ai tools and models, not from paid placements. We note whether each tool is free, freemium or paid at the time of review, and link directly to the official site. Pricing and limits change often, so confirm the current plan before you sign up, and tell us via the About page if a link is broken or a tool has shut down. To find the right tool quickly, decide what matters most to you (output quality, free-tier limits, privacy, or integrations), open two or three candidates in separate tabs, and test them with the same real task rather than a demo prompt. Free AI Shelf is independent and not affiliated with the products listed.
Quick start: if you only have time to try a few, begin with Aider, AnythingLLM, AutoGen and Chatbot Arena. They are good entry points with no or low cost, and the remaining 46 entries below cover more specialised needs, alternative pricing models and different workflows, so scroll the full list before deciding which one to adopt for the long term.
Pair program with LLMs in the terminal; git-aware.
Freecli
All-in-one desktop/self-host RAG chat for documents.
Freerag
Microsoft multi-agent conversation framework.
Freemicrosoft
Baichuan large models and chat products.
Freemiumbaichuan
Creators of FLUX image models—open and API.
Freemiumflux
Blind arena to compare chat models side by side.
Freearena
Popular open-source ChatGPT-style web UI.
Freeui
Largest hub for Stable Diffusion checkpoints and LoRAs.
Freemiummodelssd
Autonomous coding agent in VS Code.
Freevscode
Node-based diffusion UI for power users.
Freesd
Open-source IDE autopilot for any model.
Freeide
Open-source LLM app platform with workflows and RAG.
Freemiumworkflow
Hand-drawn diagrams; AI plugins in the ecosystem.
Freediagrams
Open-source knowledge-base QA bot platform.
Freerag
Low-code LangChain builder with visual flows.
Freenocode
Simplified offline SD image gen with quality defaults.
Freesd
Private local chat with open models by Nomic.
Freelocal
Build ML web demos in Python quickly.
Freepython
deepset framework for production NLP and RAG.
Freerag
Model hub, datasets, Spaces, and inference for open ML.
Freemiumhub
Host and try Gradio/Streamlit ML demos.
Freemiumgradio
Open chat UI over open-source models on Hugging Face.
Freehuggingface
Structured outputs for LLMs in Python.
Freestructured
Professional open-source creative suite for Stable Diffusion.
Freesd
Open-source ChatGPT-style desktop app for local models.
Freelocal
Open-source LLM engineering platform.
Freemiumobservability
Open-source multi-provider ChatGPT clone.
Freeselfhost
Unified API to call 100+ LLM providers.
Freemiumgateway
Efficient C/C++ inference for Llama-family models.
Freecpp
Desktop app to download and chat with local LLMs.
Freelocal
Open-source enterprise knowledge-base Q&A.
Freerag
Run open LLMs locally with a simple CLI and API.
Freelocal
Natural-language control of a local coding environment.
Freelocal
Self-hosted chat UI for Ollama and OpenAI-compatible APIs.
Freeselfhost
Open speech recognition model for local or API use.
Freestt
Browser that installs and runs AI apps locally.
Freelocal
Ask questions to your documents with full privacy.
Freerag
Agent framework built around Pydantic validation.
Freepython
Open-source second brain / RAG over your files.
Freemiumrag
Open-source RAG engine with deep document understanding.
Freerag
Diffusion-inspired music generation.
Freemiummusic
Classic Automatic1111 WebUI for local Stable Diffusion.
Freesd
Power-user front-end for local roleplay LLM chats.
Freeroleplay
Creators of Stable Diffusion—models and APIs.
Freemiumsd
Research agent that can resolve GitHub issues.
Freeresearch
Gradio UI for running local LLMs with many backends.
Freelocal
Infinite whiteboard with AI Make Real experiments.
Freemiumcanvas
Free open-source AI image upscaler for desktop.
Freeupscale
High-throughput LLM serving engine for production.
Freeserving