Best Free Open-Source Open Source Software

The open-source CMS powering much of the web.

Private, end-to-end encrypted messaging.

The advanced open-source relational database.

Free, open-source image editor.

Open-source, self-hosted alternative to Trello, Asana, and Notion

Open-source Headless CMS

Next‑generation ORM for Node.js and TypeScript

Lightning-fast and hyper-relevant search for your data

Open-source BI tool alternative to Tableau

Open‑source Laravel eCommerce framework for fast, customizable online stores

Fast, secure file sharing across your local network

An opinionated code formatter.

A modern, automatic HTTPS web server and reverse proxy

Open-source collaborative wiki and documentation software

Open‑source task manager that blends time tracking, kanban and agile planning for freelancers and small teams.

Python library for video editing

Fast, flexible flat‑file CMS for developers and designers

Open‑source hotel management suite for seamless bookings and operations

A cloud‑native, MySQL‑compatible distributed SQL database for massive scalability

Open‑source time‑series database built on PostgreSQL for scalable analytics

Open-source kanban board for small teams and freelancers

Open‑source headless CMS for developers and creators

Tiling window manager for macOS

A high‑performance, open‑source e‑commerce platform built with Python and GraphQL