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Best Open Source AI Tools & Frameworks

A verified directory of open-source artificial intelligence tools, libraries, and model frameworks with public repositories, transparent licenses, and self-hosting options.

60Tools VerifiedFilter in Directory
Weaviate logo
Editor PickOpen Source

Weaviate

Open-source vector search engine with hybrid search and multimodal indexing

Developer Frameworks & InfrastructureView Spec
Dify logo
Editor PickFreemium (Free)

Dify

Open-source visual LLM application development platform and orchestrator

Developer Frameworks & InfrastructureView Spec
Continue logo
Editor PickOpen Source

Continue

Open-source AI code assistant for VS Code and JetBrains

Developer Frameworks & InfrastructureView Spec
Muse Glimmer logo
Editor PickOpen Source

Muse Glimmer

Open-weight multimodal agent model built for local autonomous workflows

AI ModelsView Spec
Evidence logo
Editor PickOpen Source

Evidence

Code-driven business intelligence and interactive data reports in markdown and SQL

Data Analytics & Predictive ModelingView Spec
Trigger.dev logo
Editor PickFreemium (Free tier / $0/mo)

Trigger.dev

Developer-first open-source background jobs and long-running AI workflow engine

Automation & Workflow OrchestrationView Spec
Supervision logo
Editor PickOpen Source

Supervision

Open-source computer vision utilities for detections, annotators, trackers, and datasets

Computer VisionView Spec
Docling logo
Editor PickOpen Source

Docling

Open-source document parser converting PDFs, DOCX, and slides into clean markdown for RAG

NLP & Text UtilitiesView Spec
SAM 2 logo
Editor PickOpen Source

SAM 2

Foundation model for real-time promptable visual segmentation in videos and images

Computer VisionView Spec
Libraries.dev logo
Editor PickOpen Source

Libraries.dev

High-crafted React UI motion effect libraries for AI agents

Developer Frameworks & InfrastructureView Spec
Emdash logo
Editor PickOpen Source

Emdash

Open-source agentic development environment for parallel AI coding

Developer Frameworks & InfrastructureView Spec
Comma logo
Editor PickOpen Source

Comma

Open-source autonomous driving agent and robotics AI framework by comma.ai

Automation & Workflow OrchestrationView Spec
DeepSeek Harness logo
Editor PickOpen Source

DeepSeek Harness

Enterprise model evaluation and benchmarking harness for DeepSeek models

Developer Frameworks & InfrastructureView Spec
Openclaw logo
Editor PickOpen Source

Openclaw

Open-source browser automation agent and web data engine

Automation & Workflow OrchestrationView Spec
Cline logo
Editor PickOpen Source

Cline

Open-source autonomous coding agent for VS Code with terminal CLI control

Developer Frameworks & InfrastructureView Spec
Zed logo
Editor PickOpen Source

Zed

Next-gen multiplayer Rust code editor with built-in AI agent capabilities

Developer Frameworks & InfrastructureView Spec
Unsloth logo
Editor PickOpen Source

Unsloth

Ultra-fast open-source LLM fine-tuning framework with 80% less VRAM

Developer Frameworks & InfrastructureView Spec
vLLM logo
Editor PickOpen Source

vLLM

High-throughput and memory-efficient LLM serving engine

Developer Frameworks & InfrastructureView Spec
Together AI logo
Freemium ($0.20/1M tokens)

Together AI

Fast cloud inference and fine-tuning for open source AI models

Developer Frameworks & InfrastructureView Spec
Chroma logo
Open Source

Chroma

Open-source embedding database for AI applications and vector search

Developer Frameworks & InfrastructureView Spec
Qwen 3.8 logo
Open Source

Qwen 3.8

Compact open foundation model tailored for edge deployment and local agents

AI ModelsView Spec
Xiryn logo
Open Source

Xiryn

Private open-source AI agent running in local Docker

Automation & Workflow OrchestrationView Spec
React Vibe logo
Open Source

React Vibe

Motion-first animated React and Tailwind UI component library

Developer Frameworks & InfrastructureView Spec
Openmercato logo
Open Source

Openmercato

Modular open-source ERP and CRM framework with native MCP integration

Automation & Workflow OrchestrationView Spec
Maus Bot logo
Open Source

Maus Bot

Open-source desktop workspace for local multi-agent teams and MCP servers

Conversational AI & ChatbotsView Spec
Langfuse logo
Open Source

Langfuse

Open-source LLM observability, prompt management, and evaluation

Developer Frameworks & InfrastructureView Spec
Qdrant logo
Open Source

Qdrant

High-performance vector database and similarity search engine in Rust

Developer Frameworks & InfrastructureView Spec
LiteLLM logo
Open Source

LiteLLM

Call 100+ LLM APIs using the OpenAI format with load balancing

Developer Frameworks & InfrastructureView Spec
Oh My Pi logo
Open Source

Oh My Pi

Open-source terminal AI assistant framework and CLI power tool

Developer Frameworks & InfrastructureView Spec
Hermes Agent logo
Open Source

Hermes Agent

Open-source reasoning agent framework by Nous Research

Automation & Workflow OrchestrationView Spec
Open WebUI logo
Open Source

Open WebUI

Self-hosted, extensible AI interface for local and cloud models

Developer Frameworks & InfrastructureView Spec
Plane logo
Open Source

Plane

Open-source project management platform built for modern engineering teams

Automation & Workflow OrchestrationView Spec
Openbot logo
Open Source

Openbot

Open-source desktop AI agent for autonomous computer workflows

Automation & Workflow OrchestrationView Spec
Openship logo
Open Source

Openship

Open-source deployment platform for cloud and self-hosted servers

Developer Frameworks & InfrastructureView Spec
Opencode logo
Open Source

Opencode

Open-source AI coding assistant and agent environment

Developer Frameworks & InfrastructureView Spec
Overlay logo
Freemium ($0/mo)

Overlay

Visual contextual AI workspace and screen intelligence overlay

Automation & Workflow OrchestrationView Spec
Openchamber logo
Open Source

Openchamber

Open-source agentic development environment and web IDE for AI coding

Developer Frameworks & InfrastructureView Spec
OpenViking logo
Open Source

OpenViking

The open-source context database and knowledge engine for AI agents

Developer Frameworks & InfrastructureView Spec
Open-slide logo
Open Source

Open-slide

React-first presentation framework authored and structured by AI agents

Generative Content CreationView Spec
Aider logo
Open Source

Aider

Terminal-based AI pair programming in your git repository

Developer Frameworks & InfrastructureView Spec
Ollama logo
Open Source

Ollama

Run open models locally with one command

Developer Frameworks & InfrastructureView Spec
Replicate logo
Paid (Pay as you go)

Replicate

Run and fine-tune open models via a simple API

Developer Frameworks & InfrastructureView Spec
LangChain logo
Open Source

LangChain

Framework for building LLM-powered applications

Developer Frameworks & InfrastructureView Spec
n8n logo
Open Source

n8n

Source-available workflow automation you can host

Automation & Workflow OrchestrationView Spec
H2O.ai logo
Open Source

H2O.ai

Open-source machine learning with h2oGPT for docs

Data Analytics & Predictive ModelingView Spec
Hugging Face logo
Freemium (Free)

Hugging Face

The community hub for models, datasets, and demos

Developer Frameworks & InfrastructureView Spec
TensorFlow logo
Open Source

TensorFlow

Google's end-to-end machine learning platform

Developer Frameworks & InfrastructureView Spec

Head-to-Head Comparisons

Popular Open-Source AI Tools & Models Showdowns

ShowdownVS

Groq vs vLLM

Side-by-side specs, pricing, and features

ShowdownVS

LiteLLM vs OpenRouter

Side-by-side specs, pricing, and features

ShowdownVS

Aider vs Cline

Side-by-side specs, pricing, and features

ShowdownVS

Ollama vs vLLM

Side-by-side specs, pricing, and features

More Topics & Intents

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