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Open Source AI Tools & Agents

87 found (43 tools, 44 agents)

Open source AI tools you can freely use, modify, and self-host. From local LLM runners to code assistants, these tools give you full control over your AI infrastructure with transparent, community-driven development.

Quick Answer

Open source AI tools are freely available under licenses like MIT, Apache 2.0, or GPL. You can inspect the code, modify it for your needs, self-host it on your own servers, and contribute improvements back to the community. They offer maximum transparency, privacy, and customization compared to proprietary alternatives.

LangChain Agents

Observe, Evaluate, and Deploy Reliable AI Agents

Freemium

Codex CLI

Lightweight coding agent that runs in your terminal

Open Source

DeepSeek

Into the Unknown

Freemium

Zed

Minimal, fast code editor for speed & AI collaboration

Open Source

OpenHands

The open platform for cloud coding agents

Open Source

DeerFlow

An open-source SuperAgent harness that researches, codes, and creates.

Open Source

Cline

AI coding, open source and uncompromised

Open Source

Warp

The Agentic Development Environment — modern terminal & coding agent

Freemium

Penpot

The open-source design platform for teams

Open Source

crewAI

The Enterprise Agent Build & Runtime for the work your business runs on

Freemium

Goose

Your open-source AI agent — desktop, CLI & API

Open Source

LlamaIndex

AI Agents for Document OCR + Workflows

Freemium

Aider

AI pair programming in your terminal

Open Source

Jan

Open-Source ChatGPT Replacement — personal intelligence that answers only to you

Open Source

Agno

Agent framework & high-performance runtime for multi-agent systems

Open Source

LangGraph

Agent orchestration framework for reliable AI agents

Open Source

CopilotKit

Bring Users and AI Agents together inside real apps

Freemium

Postiz

The All-in-One agentic social media scheduling tool

Open Source

AgentGPT

Configure & deploy autonomous AI agents

Freemium

Tabby

Open-source, self-hosted AI coding assistant

Open Source

Composio

Give Claude, Codex, or any harness secure access to 1500+ tools

Freemium

HuggingFace Agent

Build and run agents in a few lines of code

Open Source

Kestra

One orchestrator for every workflow, from data to AI.

Open Source

Alibaba AgentScope

The open-source stack for developing, hosting & evolving agents

Open Source

Kilo Code

One open agent for every developer workflow

Freemium

Stability AI

Unlock human creativity with open-source generative AI models for image, audio, video, and 3D.

Freemium

Onlook

The Developer Tool for Designers.

Freemium

Haystack

Build custom AI agents and RAG applications with open AI orchestration

Open Source

FLUX

Creations are truer to life in every kind of style.

Paid

Activepieces

AI-first automation for every team — open source

Open Source

Pandas AI Agent

The Best AI Dashboard for Business Intelligence

Open Source

Vanna AI

The SQL Agent

Open Source

Qwen

Alibaba's Qwen model family — chat, image, code, and reasoning

Freemium

Pydantic AI

Agent framework to build production apps with Pydantic + LLMs

Open Source

SWE-agent

Open-source autonomous agent for GitHub issues & coding challenges

Open Source

Devika

Open-source agentic AI software engineer (open Devin alternative)

Open Source

Windmill

Code-first orchestration platform for internal software

Open Source

Semgrep

AI-assisted SAST, SCA and Secrets Detection

Freemium

Qwen Agent

Agent framework built on Qwen — function calling, MCP, code interpreter, RAG

Open Source

Bolt.new

Build websites, apps & prototypes by chatting with AI

Freemium

Botpress

The AI-native customer support agent platform

Freemium

PR-Agent

Open-source, AI-powered code review agent

Open Source

Morphic

Search that thinks deeper

Open Source

Strands Agents SDK

The open source toolkit for building production agents

Open Source

mini-swe-agent

The 100-line AI agent that solves GitHub issues and assists in your command line.

Open Source

ForgeCode

Your software factory. It never clocks out

Open Source

stagewise

The Agentic IDE for Open-Source Models

Open Source

Atomic Agents

Open-source framework for building modular AI agents

Open Source

Agency Swarm

Open-source framework for building reliable multi-agent swarms

Open Source

Agenta

The open-source workspace for your agents

Open Source

Genmo AI

Open world models — cutting-edge open-source text-to-video

Freemium

OpenOutreach

Open-Source AI Lead Finder That Tells You Why Each Lead Fits

Open Source

Deepnote

Collaborative analytics & data science notebook

Freemium

AingDesk

拥有超强知识库能力的开源免费AI助手

Open Source

OpenAGI

OpenAGI: When LLM Meets Domain Experts

Open Source

LetsFG

Book Flights & Hotels in Seconds

Freemium

Amazon Q Developer

Generative AI assistant for software development (AWS)

Freemium

Fetch.ai Agents

Your personal AI + trusted brand agents — agent marketplace

Open Source

Omniplex AI

Where Knowledge Evolves

Open Source

nova-act

Nova Act is an AWS service for building and deploying highly reliable AI agents that automate UI-based workflows at scale.

Free

Bolna

Voice AI Built for India

Paid

Cossistant

AI Agent Customer Support for Your SaaS in Under 10 Lines of Code

Open Source

openteams

Build and ship your indie software faster with an AI team.

Open Source

TaskGen

Task-based Agentic Framework using StrictJSON as the core

Open Source

OwnPilot

Privacy-first personal AI assistant platform. Self-hosted. Your data stays yours.

Open Source

Abu-Cowork

A local-first AI desktop assistant

Open Source

comanda

Declarative AI Pipelines for the Command Line

Open Source

Pipali

Research, create, automate. Work so fast it feels like play.

Freemium

sapphire

Sapphire is an agentic framework.

Open Source

GoGogot

Open-Source Self-Hosted AI Agent Written in Go

Open Source

middleman

Local-First AI Agent Orchestration

Open Source

HashCortX

One UI. A swarm of agents. Zero leaks.

Open Source

SpecWeave

Every AI agent in one workspace you own

Open Source

Cerebrum

An agent SDK for AIOS to build and manage AI agents.

Open Source

basjoo

Controllable AI customer support for modern product teams

Open Source

mistermorph

Reusable / Secure / Adorable AI Agent

Open Source

TDAD

Upgrade Your AI from Code Generator to Engineer

Open Source

Refact.ai Agent

Your open-source, autonomous AI coding agent

Open Source

resonant

An AI that becomes someone — to you.

Open Source

squads-cli

Your AI workforce. Built to execute.

Open Source

KAI-Flow

Orchestrate AI Agents and Dynamic Workflows Visually

Open Source

Corellis

Scale One AI Agent Into a Self-Coordinating Fleet

Open Source

lullabeast

Bring an idea, leave with a working MVP

Open Source

1Founder

AI Boardroom for Startup Validation

Freemium

Dust

Multiplayer AI for human-agent collaboration

Freemium

Codebuff

AI Coding Assistant for Your Terminal

Paid

ORKG Ask

Find research you are actually looking for

Open Source

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Frequently Asked Questions

What are the best open source AI tools?

The open source tools and agents with the most GitHub stars on this list are LangChain Agents, Codex CLI, DeepSeek, Zed, OpenHands, DeerFlow. The list above is ordered by GitHub stars, so the projects with the largest communities come first.

Can I use open source AI tools commercially?

It depends on the license. MIT and Apache 2.0 licenses allow commercial use with minimal restrictions. GPL and AGPL require derivative works to also be open source. Always check the specific license of each tool before commercial use.

Are open source AI tools as good as proprietary ones?

Quality varies from project to project, so compare the features and GitHub stars of the tools on this list. The usual trade-off is setup effort against out-of-the-box convenience.

Can I self-host open source AI tools?

Yes — self-hosting is a primary advantage of open source AI tools. You can run them on your own servers, which keeps your data on infrastructure you control. However, self-hosting requires technical infrastructure and maintenance. Many tools also offer hosted versions if you prefer convenience.

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