Best Open Source AI & Machine Learning Tools in 2026

SWE-agent

AI & Machine Learning Web & App Development

Autonomous AI agent that reads code and resolves GitHub issues

stars 19.1Klicense MITlang Python

AI Agents Developer Tools Coding+5

Karakeep

Product & Project Management AI & Machine Learning Business & Productivity

Save links and notes with AI auto-tags, no manual organization

stars 24.9Klicense AGPL-3.0lang TypeScript

AI Agents Workflow Automation Documentation

Trieve

AI & Machine Learning Web & App Development Product & Project Management

Hybrid search and RAG infrastructure for AI knowledge bases

stars 2.6Klicense MITlang Rust

AI Agents Developer Tools Coding+6

MariaDB Server

Data & Analytics IT Management Web & App Development+1

Open source MySQL-compatible relational database server

stars 7.5Klicense GPL-2.0lang C++

Database Open Core Server Management+6

Airbyte

Data & Analytics AI & Machine Learning Web & App Development+1

Open source ELT platform with 300+ data connectors

stars 21.1Klicense NOASSERTIONlang Python

Developer Tools API Infrastructure Database+14

Metarank

AI & Machine Learning Data & Analytics Web & App Development

Open source personalization and search ranking engine

stars 2.4Klicense Apache-2.0lang Scala

Search Engine LLM A/B Testing+10

Totum

Web & App Development Business & Productivity IT Management+2

Self-hosted low-code platform for internal business tools

stars 983license MITlang PHP

Database No Code Self Hosted+11

Saleor

Web & App Development Product & Project Management AI & Machine Learning

Open source headless e-commerce platform with GraphQL API

stars 22.9Klicense BSD-3-Clauselang Python

Headless CMS API Development Tools Developer Framework+13

Pulumi

Web & App Development IT Management AI & Machine Learning+1

Write infrastructure as code in TypeScript, Python, or Go

stars 25.1Klicense Apache-2.0lang Go

Developer Tools DevOps Tools CI/CD Platforms+14

21st.dev

Web & App Development AI & Machine Learning Design & Creative+1

Browse and install production-ready shadcn/ui components via CLI

stars 1.9Klicense MITlang TypeScript

UI/UX Design Developer Tools AI Coding Assistant+3

ProjectDiscovery

Security & Monitoring Web & App Development IT Management+1

Open source security tools for finding vulnerabilities at scale

stars 28.1Klicense MITlang Go

Developer Tools DevOps Tools Cybersecurity+18

Ploomber

Web & App Development IT Management Data & Analytics+3

Build reproducible Python data pipelines with DAG orchestration

stars 3.6Klicense Apache-2.0lang Python

CI/CD Platforms Authentication Authorization+12

Category

Explore by categories

All

Web Development

Backend Development

APIs & Integration

Developer Tools

DevOps & CI/CD

Cloud & Hosting

LLMOps & AI Tooling

Databases & Storage

No-Code & Low-Code

Customer Support

IT Management

Marketing & Growth

Finance & Fintech

Product & Project Management

AI & Machine Learning

Data & Analytics

Communication & Collaboration

Business & Productivity

Design & Creative

Security & Monitoring

Web & App Development

SWE-agent

Karakeep

Trieve

MariaDB Server

Airbyte

Metarank

Totum

Saleor

Pulumi

21st.dev

ProjectDiscovery

Ploomber

SWE-agent

Karakeep

Trieve

MariaDB Server

Airbyte

Metarank

Totum

Saleor

Pulumi

21st.dev

ProjectDiscovery

Ploomber