Best Free Open-Source Open Source Software

On-device subtitle generation for video editors

Open-source, self‑hosted Bitcoin payment processor for merchants

Free, web‑based POS for small businesses and retailers

Calendar components for React Native

Modern copy to clipboard solution without Flash

Lightweight API exploration and testing IDE

Open source CRM for the world

Self-hosted web archiving made easy

Self-hosted remote desktop alternative to TeamViewer

Cross‑platform real‑time system monitoring for admins and DevOps

Automatic work journal and time tracker

Learning management system for online courses

Open‑source ERP & CRM for SMEs, free and fully customizable

AI-powered video editing and generation

Simple home server OS built on Docker

A desktop email client that turns your inbox into a kanban board

A fast, terminal‑based email client for developers

Self‑hosted subscription tracker to monitor and manage all your recurring expenses

Open‑source web app for personal and small‑business finance management

A free, open‑source desktop music player for Windows, macOS, and Linux

Interactive charting and data visualization library

Simple forum software for building great communities

Open source project management that works for you, not against you

Interactive application firewall for GNU/Linux