Software & Tools

Best Open-Source AI Tools

42 curated Open-Source AI Tools, updated 2026-10-22. Top picks include LangGPT, 易标 OpenBidKit, 魔搭 ModelScope. Compare free, freemium and paid options, then open a tool page or browse alternatives.

42 toolsUpdated 2026-10-22Free 29Freemium 13Paid 0
Free
LangGPT
LangGPT

Structured prompt framework from China

PromptsAI Open Source
Free
易标 OpenBidKit
易标 OpenBidKit

Open-source AI bid writing toolkit

Bid WritingAI Open Source
Free
魔搭 ModelScope
魔搭 ModelScope

Alibaba's open-source model community

Art ModelsAI Open Platforms
Freemium
CVAT
CVAT

Open-source CV annotation industry standard

Data LabelingAI Open Source
Free
GPT-SoVITS
GPT-SoVITS

Open-source voice cloning star: few-shot cloning from seconds of audio

Voice CloningAI Open Source
Free
RIME 小狼毫
RIME 小狼毫

Open-source keyboard engine adored by geeks and power users

AI Input MethodsAI Open Source
Freemium
零一万物 01.AI
零一万物 01.AI

Kai-Fu Lee's 01.AI, maker of Yi open models

LLMsAI Open Source
Free
书生·浦语 InternLM
书生·浦语 InternLM

InternLM open LLMs from Shanghai AI Laboratory

LLMsAI Open Source
Freemium
百川智能 Baichuan
百川智能 Baichuan

Baichuan open-source LLMs by Sogou founder Wang Xiaochuan

LLMsAI Open Source
Freemium
AnythingLLM
AnythingLLM

Open-source app to chat with your docs using any LLM

Knowledge BaseAI Open Source
Free
XTuner
XTuner

Efficient LLM fine-tuning toolkit by InternLM

Model TrainingAI Open Source
Free
Axolotl
Axolotl

Config-driven LLM fine-tuning tool

Model TrainingAI Open Source
Free
LLaMA-Factory
LLaMA-Factory

Zero-code fine-tuning for 100+ open LLMs

Model TrainingAI Open Source
Free
DeepSpeed
DeepSpeed

Microsoft's library for training giant models

Model TrainingAI Open Source
Free
飞桨 PaddlePaddle
飞桨 PaddlePaddle

Baidu's open-source deep learning platform

Model TrainingAI Open Source
Free
ColossalAI
ColossalAI

Distributed deep learning framework for big models

Model TrainingAI Open Source
Free
ms-swift
ms-swift

ModelScope's fine-tuning and deployment framework

Model TrainingAI Open Source
Free
DSPy
DSPy

Programming, not prompting, foundation models

AI FrameworksAI Open Source
Free
开源中国 OSCHINA
开源中国 OSCHINA

China's open-source news and community hub

Dev CommunitiesAI Open Source
Free
Open WebUI
Open WebUI

Feature-rich self-hosted UI for local LLMs

AI Open SourceLLMs
Free
text-generation-webui
text-generation-webui

Veteran web UI for running local LLMs

AI Open SourceLLMs
Free
llama.cpp
llama.cpp

Run LLMs on plain CPUs, in C/C++

AI Open SourceLLMs
Free
Stable Diffusion WebUI
Stable Diffusion WebUI

The most popular local UI for Stable Diffusion

AI Open SourceImage
Free
LocalAI
LocalAI

OpenAI-compatible local inference API

AI Open SourceAI APIs
Free
Fooocus
Fooocus

Offline image generator with Midjourney-like ease

AI Open SourceImage
Free
GPT4All
GPT4All

Local LLMs that run on everyday laptops

AI Open SourceDesktop AI
Free
Transformers
Transformers

The definitive library for pretrained models

AI Open SourceAI Frameworks
Freemium
Zilliz
Zilliz

Managed Milvus vector database cloud

AI InfrastructureAI Open Source
Freemium
Qdrant
Qdrant

High-performance vector database written in Rust

AI InfrastructureAI Open Source
Freemium
Weaviate
Weaviate

Open-source vector database with hybrid search

AI InfrastructureAI Open Source
Freemium
Chroma
Chroma

The AI-native open-source embedding database

AI InfrastructureAI Open Source
Free
SGLang
SGLang

Fast LLM serving engine with RadixAttention

AI InfrastructureAI Open Source
Free
TensorRT-LLM
TensorRT-LLM

NVIDIA's toolkit to max out GPU inference

AI InfrastructureAI Open Source
Freemium
Vanna AI
Vanna AI

Open-source RAG framework for accurate text-to-SQL

Data AnalyticsAI Open Source
Freemium
Chat2DB
Chat2DB

Open-source ChatBI: query databases in natural language

Data AnalyticsAI Open Source
Freemium
Label Studio
Label Studio

Most popular open-source data labeling tool

Data LabelingAI Open Source
Free
PyTorch
PyTorch

The de facto deep learning framework

AI Open SourceAI Frameworks
Free
Gitee
Gitee

China's leading code hosting platform

Dev CommunitiesAI Open Source
Freemium
Unsloth
Unsloth

2x faster LLM fine-tuning with 70% less VRAM

Model TrainingAI Open Source
Free
One API
One API

Open-source LLM API gateway and key manager

AI APIsAI Open Source
Free
昇思 MindSpore
昇思 MindSpore

Huawei's all-scenario AI framework

Model TrainingAI Open Source
Freemium
天工 Skywork
天工 Skywork

Kunlun's Skywork: prolific open-source LLM family

LLMsAI Open Source

How we curate this category

Every listing is reviewed by a human before publishing. We group tools by use case, keep pricing and category data current, and link to official websites — paid placement never determines order.

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