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Best Open Source AI Tools 2026

A curated ranking of the 100 most popular open-source AI tools, sorted by GitHub stars. From local LLMs and image generators to coding assistants and voice models—find the right tool for your project.

100 AI Tools Listed
3.0M+ Total GitHub Stars
100% Open Source

Showing 100 ai tools sorted by GitHub stars — all open-source with proven community adoption.

#1
Ollama ★ 174k+ Featured

Run large language models locally on your machine

llm local open-source inference MIT
#2
Stable Diffusion WebUI ★ 163k+ Featured

Web UI for Stable Diffusion image generation

image generative open-source web-ui AGPL-3.0
#3
Open WebUI ★ 142k+ Featured

User-friendly self-hosted web UI for Ollama and LLMs

chat web-ui local open-source MIT
#4
ComfyUI ★ 117k+ Featured

Powerful node-based UI for Stable Diffusion

image generative workflow open-source GPL-3.0
#5
llama.cpp ★ 117k+ Featured

Fast LLM inference in C/C++ for local deployment

llm local inference open-source MIT
#6
OpenAI Whisper ★ 103k+ Featured

Robust speech recognition via large-scale weak supervision

speech audio open-source recognition MIT
#7
ChatGPT Next Web ★ 88k+

Cross-platform ChatGPT/Gemini UI with one-click deploy

chat web-ui open-source productivity MIT
#8
LobeChat ★ 79k+

Modern open-source ChatGPT / LLMs UI framework

chat web-ui open-source llm Apache-2.0
#9
GPT4All ★ 77k+

Run powerful and customized LLMs locally

llm local open-source chat MIT
#10
Stable Diffusion ★ 73k+ Featured

Original latent diffusion model for photorealistic image synthesis

image generative model open-source CreativeML OpenRAIL-M
#11
Screenshot to Code ★ 73k+

Converts screenshots to clean HTML/CSS/JS code using AI

code productivity vision open-source MIT
#12
MinerU ★ 68k+

High-quality document parser converting PDFs to Markdown

document pdf parsing open-source Apache-2.0
#13
Open Interpreter ★ 64k+

Natural language interface to run code on your computer

code productivity open-source llm AGPL-3.0
#14
AnythingLLM ★ 62k+

All-in-one desktop and Docker AI application

rag chat productivity open-source MIT
#15
GPT-SoVITS ★ 59k+

Powerful few-shot voice conversion and TTS toolkit

voice tts cloning open-source MIT
#16
PrivateGPT ★ 57k+

Ask questions to your documents with 100% private AI

privacy rag llm open-source Apache-2.0
#17
Whisper.cpp ★ 51k+

Port of OpenAI Whisper in C/C++ for fast local inference

speech local inference open-source
#18
Fooocus ★ 50k+

Midjourney-style image generation, offline and open-source

image generative open-source easy-to-use GPL-3.0
#19
Text Generation WebUI ★ 47k+

Gradio-based web UI for running local LLMs

llm local web-ui open-source AGPL-3.0
#20
LocalAI ★ 47k+

Free, open-source alternative to OpenAI API running locally

llm local api open-source MIT
#21
Aider ★ 47k+

AI pair programmer in your terminal

code terminal productivity open-source Apache-2.0
#22
Coqui TTS ★ 46k+

Deep learning toolkit for Text-to-Speech synthesis

speech tts open-source audio MPL-2.0
#23
Jan ★ 43k+

Open-source ChatGPT alternative that runs offline

chat local open-source llm Apache-2.0 / GPL-3.0
#24
Fabric ★ 43k+

Open-source framework for augmenting humans using AI

productivity ai-augmentation open-source cli MIT
#25
LibreChat ★ 40k+

Enhanced ChatGPT clone with multi-model support

chat multi-model web-ui open-source
#26
ChatTTS ★ 39k+

Fine-grained conversational text-to-speech model

speech tts chinese open-source CC BY-NC 4.0
#27
Quivr ★ 39k+

Your AI second brain for productivity and knowledge

rag productivity knowledge open-source Apache-2.0
#28
Bark ★ 39k+

Text-prompted generative audio model with emotion and music

speech audio generative open-source MIT
#29
Open Assistant ★ 37k+

LAION's open-source ChatGPT alternative for everyone

chat open-source rlhf llm Apache-2.0
#30
OpenVoice ★ 37k+

Versatile instant voice cloning by MyShell AI

voice cloning tts open-source CC BY-NC 4.0
#31
Marker ★ 36k+

Converts PDF, EPUB, MOBI to Markdown accurately

document pdf ocr open-source
#32
RVC Voice Conversion ★ 36k+

Retrieval-based voice conversion web interface

voice conversion real-time open-source MIT
#33
Real-ESRGAN ★ 36k+

Practical image/video super-resolution using ESRGAN

image upscaling super-resolution open-source BSD-3-Clause
#34
CopilotKit ★ 35k+

React framework for in-app AI copilots and chatbots

react chat productivity open-source
#35
Khoj ★ 35k+

Personal AI assistant that searches your notes and docs

productivity search rag open-source
#36
Continue ★ 34k+

Open-source AI code assistant for VS Code and JetBrains

code ide productivity open-source Apache-2.0
#37
Diffusers ★ 34k+

HuggingFace library for image, audio and video generation

image generative framework open-source Apache-2.0
#38
Tabby ★ 34k+

Self-hosted AI coding assistant, open GitHub Copilot alternative

code copilot self-hosted open-source Apache-2.0
#39
Chatbot UI ★ 33k+

Open-source ChatGPT-style UI for multiple AI providers

chat web-ui open-source multi-model MIT
#40
Fish Speech ★ 31k+

Brand new TTS solution with voice cloning

speech tts cloning open-source
#41
Danswer ★ 30k+

AI-powered enterprise search connecting all company data

enterprise search rag open-source
#42
SillyTavern ★ 30k+

Advanced UI for AI roleplay and interactive story writing

roleplay chat llm open-source
#43
so-vits-svc ★ 28k+

Singing voice conversion based on VITS and SoftVC

voice singing conversion open-source MIT
#44
InvokeAI ★ 27k+

Professional creative engine for Stable Diffusion

image generative workflow open-source Apache-2.0
#45
MLX ★ 27k+

Apple's ML framework optimized for Apple Silicon

inference apple local open-source
#46
FLUX ★ 26k+

State-of-the-art open image generation models by Black Forest Labs

image generative model open-source
#47
Llamafile ★ 25k+

Run LLMs as a single cross-platform executable file

llm local portable open-source
#48
OpenAI Translator ★ 25k+

Browser extension and desktop app for AI translation

translation productivity cross-platform open-source GPL-3.0
#49
Faster Whisper ★ 24k+

4x faster Whisper transcription with CTranslate2

speech inference performance open-source
#50
MemGPT ★ 23k+

LLM OS with virtual memory and persistent context management

llm memory context open-source
#51
rembg ★ 23k+

AI tool to remove image backgrounds automatically

image background-removal open-source productivity
#52
AudioCraft ★ 23k+

Meta's library for audio generation including MusicGen

audio music generative open-source MIT
#53
WhisperX ★ 23k+

Whisper with word-level timestamps and speaker diarization

speech diarization timestamps open-source
#54
OpenUI ★ 22k+

Build UI components with AI-assisted description

ui code productivity open-source
#55
Surya ★ 21k+

Accurate multilingual document OCR and line detection

ocr document multilingual open-source
#56
FunASR ★ 18k+

Fundamental end-to-end speech recognition toolkit

speech asr chinese open-source
#57
CodeFormer ★ 18k+

Robust face restoration and enhancement using a Transformer

image face restoration open-source
#58
DocsGPT ★ 18k+

AI-powered documentation chatbot with RAG

rag documentation chat open-source
#59
ChatALL ★ 16k+

Chat with multiple AI bots simultaneously to find the best answer

chat multi-model productivity open-source
#60
Plandex ★ 15k+

AI coding engine for complex multi-file tasks in the terminal

code terminal productivity open-source
#61
AISuite ★ 15k+

Andrew Ng's simple interface for multiple AI providers

llm api unified open-source
#62
F5-TTS ★ 15k+

Zero-shot text-to-speech with voice cloning

tts zero-shot cloning open-source
#63
RWKV-LM ★ 15k+

RNN-based LLM with transformer-level performance

llm model rnn open-source
#64
TensorRT-LLM ★ 14k+

NVIDIA's toolkit for optimizing LLM inference performance

llm inference nvidia performance
#65
SadTalker ★ 14k+

Animate face images with speech audio to create talking portraits

video avatar animation open-source
#66
Draw a UI ★ 14k+

Use AI to generate HTML from hand-drawn UI sketches

ui code vision open-source
#67
CogVideo ★ 13k+

Open-source video generation model by THUDM

video generative open-source model
#68
SD WebUI Forge ★ 13k+

Optimized SD WebUI fork with faster generation and lower VRAM

image generative performance open-source
#69
AnimateDiff ★ 12k+

Animate your personalized text-to-image diffusion models

video animation diffusion open-source
#70
ShellGPT ★ 12k+

AI-powered command-line productivity tool

cli terminal productivity open-source
#71
LLM CLI ★ 12k+

CLI utility and Python library for interacting with LLMs

cli llm productivity open-source
#72
InstantID ★ 12k+

Identity-preserving personalized image generation

image identity generative open-source
#73
h2oGPT ★ 12k+

Private enterprise-grade Q&A with local document retrieval

rag enterprise local open-source
#74
Piper TTS ★ 11k+

Fast, local neural text to speech system

tts local fast open-source
#75
AI Toolkit ★ 11k+

Various AI scripts for LoRA and Dreambooth training

training lora dreambooth open-source
#76
MagicAnimate ★ 11k+

Temporally consistent human animation using diffusion

video animation human open-source
#77
KoboldCpp ★ 11k+

Easy-to-use local LLM inference with KoboldAI interface

llm local inference open-source
#78
Dolly ★ 11k+

Databricks' open-source instruction-following LLM

llm instruction-following open-source model
#79
Demucs ★ 10k+

Music source separation (vocals, drums, bass, guitar)

audio music separation open-source
#80
PhotoMaker ★ 10k+

Customizing realistic human photos via stacked ID embedding

image portrait identity open-source
#81
Nougat ★ 10k+

Neural OCR for academic PDF documents with math support

ocr academic pdf open-source
#82
PowerInfer ★ 9.6k+

Fast LLM inference engine for consumer-grade hardware

inference local performance open-source
#83
CodeGeeX ★ 8.8k+

Multilingual code generation model by THUDM

code completion multilingual open-source
#84
VALL-E X ★ 7.9k+

Cross-lingual neural codec language model for TTS

tts cross-lingual neural open-source
#85
ShortGPT ★ 7.4k+

Automated AI framework for YouTube Shorts / TikTok videos

video automation content open-source
#86
big-AGI ★ 7.0k+

Generative AI suite for professionals with personas and tools

chat productivity multi-model open-source
#87
DeepSpeed-Chat ★ 6.8k+

End-to-end RLHF training pipeline for chat models

training rlhf microsoft open-source
#88
IP-Adapter ★ 6.6k+

Image prompt adapter for Stable Diffusion models

image adapter diffusion open-source
#89
openplayground ★ 6.4k+

An LLM playground to compare multiple models side-by-side

chat multi-model comparison open-source
#90
MuseTalk ★ 6.0k+

Real-time high-quality virtual avatar with lip sync

video avatar real-time open-source
#91
Enchanted ★ 6.0k+

iOS app for private AI chat using local Ollama models

ios local privacy open-source
#92
LLM Visualization ★ 5.4k+

3D visualization of large language model internals

visualization education llm open-source
#93
Midjourney Proxy ★ 5.3k+

Proxy service for Midjourney API integration

image midjourney api open-source
#94
LM Studio CLI ★ 5.0k+

Command-line interface for LM Studio local LLM app

llm cli local open-source Proprietary (free for personal use)
#95
ExLlamaV2 ★ 4.6k+

Efficient inference library for quantized LLMs

llm quantization inference open-source
#96
GPT Code UI ★ 3.5k+

Open-source implementation of ChatGPT code interpreter

code sandbox jupyter open-source
#97
GPTScript ★ 3.3k+

Scripting language for interacting with LLMs like programs

scripting llm automation open-source
#98
FreedomGPT ★ 2.7k+

Desktop app for running uncensored LLMs locally

llm local uncensored open-source
#99
Whisper WebUI ★ 2k+

Gradio-based web UI for OpenAI Whisper transcription

speech web-ui transcription open-source
#100
InstructLab ★ 1.4k+

Community-based approach for LLM alignment and fine-tuning

fine-tuning alignment open-source llm
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