Open Source AI & Machine Learning Tools

A curated collection of the best free and open source software for AI and machine learning, from model runtimes you host yourself to the chat interfaces people actually use.

Suna

Open source AI management system where agents, skills, memory and connectors live in a git repository your company owns.

Alternative to:

ChatGPT

AI agent that autonomously handles real-world tasks

Stars
20,323
Forks
3,439
Last commit
16 hours ago

LiveKit

Open source WebRTC server for real-time video, audio and data, giving developers scalable multi-user conferencing they can host themselves.

Alternative to:

Twilio

Full-stack platform for voice, video, and physical AI agents

Stars
21,877

Eigent

Desktop application that runs a customizable team of AI agents locally, aimed at people automating multi-step workflows on their own machine.

Alternative to:

OpenAI Codex

Desktop multi-agent workforce for automating real tasks

Stars
15,675

SurfSense

Open web research platform giving AI agents structured live data from social, search and commerce sources through one API.

Alternative to:

Glean

Privacy-first knowledge base with any AI model you choose

Stars
16,656

Leon

A self-hosted personal AI assistant that runs skills, tools and memory on your own machine, for people wary of cloud assistants.

Alternative to:

Amazon Alexa

Your open-source personal assistant for server automation

Stars
17,616

E2B

Cloud sandboxes for running AI-generated code safely, aimed at developers building agents that need to execute what a model writes.

Alternative to:

Modal

Secure cloud environments for enterprise AI agents

Stars
14,584

Botpress

Chatbot and assistant platform with a CLI, SDK and integration hub, for developers shipping conversational products on Botpress Cloud.

Alternative to:

Voiceflow

Build powerful AI agents with cutting-edge LLM technology

Stars
14,972

Inbox Zero

An AI email assistant that organizes your inbox, pre-drafts replies and unsubscribes in bulk, for anyone losing hours to email.

Alternative to:

Superhuman

AI email assistant that automates, organizes, and declutters

Stars
12,841

Portkey AI Gateway

An API gateway that routes requests to hundreds of model providers, with retries, fallbacks, caching and guardrails in front.

Alternative to:

Cloudflare AI Gateway

Complete production stack for AI teams

Stars
13,284

Scira

An agentic research platform that plans queries, searches live sources and returns cited answers, for anyone who researches on the web.

Alternative to:

ChatGPT

Minimalistic AI-powered search engine for instant answers

Stars
11,909

Arize Phoenix

An open source AI observability platform for engineers who need to trace, evaluate, and debug LLM applications.

Alternative to:

LangSmith

Open-source LLM tracing & evaluation for AI optimization

Stars
12,038

Nango

An integration platform that handles auth, execution and observability for 900 plus APIs, for teams shipping product integrations.

Alternative to:

Composio

Build product integrations with 500+ APIs in hours

Stars
13,014

Typebot

A visual chatbot builder with more than 34 blocks, embeddable anywhere, for teams collecting answers in real time.

Alternative to:

Voiceflow

Create powerful chatbots without coding

Stars
10,584

Bifrost

An AI gateway that fronts more than twenty model providers behind one OpenAI-compatible API, with failover, load balancing, and caching.

Alternative to:

Cloudflare AI Gateway

Ultra-fast AI gateway with enterprise-grade reliability

Stars
9,155

Morphic

An AI answer engine that returns cited answers with a generative interface, for anyone wanting a self-hosted search assistant.

Alternative to:

ChatGPT

AI-powered answer engine with dynamic interface generation

Stars
9,208

FalkorDB

A multi-tenant property graph database for teams building knowledge graphs, agent memory and retrieval on Cypher queries.

Alternative to:

Amazon Neptune

Graph database built on sparse matrices for knowledge graphs and GenAI

Stars
10,497

Orama

A JavaScript search engine that runs wherever JavaScript does, handling full-text, vector, and hybrid queries from a schema you define.

Alternative to:

Pinecone

Full-text & vector search at the edge.

Stars
10,586

Steel

Open source browser API that runs and manages Chrome sessions for AI agents and web automation tools.

Alternative to:

Bright Data

Cloud browser sessions for AI agents and web automation

Stars
7,876

Rakazo

Self-hosted platform for persistent AI teammates with their own memory, computers and tools, reachable from web, desktop and mobile clients.

Alternative to:

Lindy

Self-hosted AI agents that do real work on your machine

Stars
6,072

OpenLLMetry

OpenTelemetry extensions that trace LLM applications, for teams who want model calls in the observability stack they already run.

Alternative to:

LangSmith

Monitor LLM performance with open-source observability

Stars
7,512

Dograh

An open source voice agent platform for teams that want to build, test and self-host production phone assistants.

Alternative to:

Voiceflow

Self-hostable voice AI platform with a visual agent workflow builder

Stars
5,968

Helicone

An AI gateway and observability platform that logs LLM requests, tracks cost and latency, and routes across providers for AI engineers.

Alternative to:

LangSmith

Build reliable AI apps with comprehensive observability

Stars
6,242

Rivet

A library for stateful backends where each agent, session, document or tenant runs as a long-lived actor with in-memory state.

Alternative to:

Azure Durable Functions

Build stateful backends with in-memory actors

Stars
6,379

5ire

A desktop AI assistant and MCP client that talks to major model providers and indexes your own documents locally.

Alternative to:

ChatGPT

Smart desktop AI assistant with powerful local knowledge features

Stars
5,374

Agenta

Open-source workspace where teams build agents by chatting with them, connect them to apps, and run them in the background.

Alternative to:

Lindy

Build, automate, and improve AI agents with your team

Stars
4,866

ACI.dev

A tool-calling platform that connects AI agents to hundreds of services with managed authentication, permissions and dynamic tool discovery.

Alternative to:

Composio

Build reliable AI agents with unified tool integration

Stars
4,924

Proton Lumo

Proton's confidential AI chat assistant, storing every conversation with zero-access encryption so that not even Proton can read your chat history.

Alternative to:

ChatGPT

Private AI chat with zero-access encryption

Stars
5,660

Latitude

Observability platform for AI agents that traces every run, groups failures into tracked signals, and dispatches coding agents to fix them.

Alternative to:

LangSmith

Full observability for AI agents in production

Stars
4,738

LangWatch

Platform for testing, simulating, evaluating and monitoring LLM-powered agents, aimed at teams needing regression testing and production observability.

Alternative to:

LangSmith

Simulation-based testing and evaluation for AI agents

Stars
4,996

Pipeshub

Open-source workplace AI platform that connects company knowledge across business systems and answers questions with citations, respecting each person's permissions.

Alternative to:

Coveo

Enterprise workplace AI with data you own and control

Stars
3,856

Laminar

An observability platform purpose-built for AI agents, giving engineers tracing, evaluations and dashboards over what their agents actually did.

Alternative to:

LangSmith

AI-powered platform for engineering LLM products

Stars
3,456

OpenLIT

An OpenTelemetry-native platform for AI engineering, covering observability, evaluations, prompt versioning and secret storage for LLM applications.

Alternative to:

LangSmith

Monitor, debug, and scale LLM applications with ease

Stars
2,890

Deepnote

Open source data notebook that swaps the ipynb format for a readable YAML file and runs inside VS Code, Cursor or Windsurf.

Alternative to:

Mode

Python, SQL, and AI in a collaborative data notebook

Stars
3,025

Swirl Search

Federated AI search and RAG across your company's applications, answering questions from live sources without copying anything into a vector database.

Alternative to:

Coveo

Get instant answers from your company knowledge

Stars
3,049

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Open Source AI & Machine Learning Tools

A curated collection of the best free and open source software for AI and machine learning, from model runtimes you host yourself to the chat interfaces people actually use.

Suna

LiveKit

Eigent

SurfSense

Leon

E2B

Botpress

Inbox Zero

Portkey AI Gateway

Scira

Arize Phoenix

Nango

Typebot

Bifrost

Morphic

FalkorDB

Orama

Steel

Rakazo

OpenLLMetry

Dograh

Helicone

Rivet

5ire

Agenta

ACI.dev

Proton Lumo

Latitude

LangWatch

Pipeshub

Laminar

OpenLIT

Deepnote

Swirl Search

Suna

LiveKit

Eigent

SurfSense

Leon

E2B

Botpress

Inbox Zero

Portkey AI Gateway

Scira

Arize Phoenix

Nango

Typebot

Bifrost

Morphic

FalkorDB

Orama

Steel

Rakazo

OpenLLMetry

Dograh

Helicone

Rivet

5ire

Agenta

ACI.dev

Proton Lumo

Latitude

LangWatch

Pipeshub

Laminar

OpenLIT

Deepnote

Swirl Search

Parlant