Open source alternative communication platform

Review Board

An extensible and friendly code review tool for projects and companies of all sizes

Rocket.Chat

Rocket.Chat is a secure and highly customizable communication platform for teams and organizations needing robust security and control over their data.

Rocketchat

Rocket.Chat is a secure, collaborative communication platform that enables real-time communication and streamlined workflows for teams and organizations.

Rocky Linux

Rocky Linux is a community-driven, enterprise-grade Linux distribution that is 100% compatible with Red Hat Enterprise Linux.

Roundcube

Roundcube is a feature-rich, Open Source, browser-based email client with a user-friendly interface.

Rspamd is a high-performance, Open Source spam filtering system with a powerful Lua API for customization.

Rspamd is a high-performance, Open Source spam filtering system with a Lua API for custom rules and plugin development.

RustDesk

RustDesk is a fast, secure, and Open Source remote desktop software that allows for self-hosting.

SCENARIchain-server

SCENARIchain-server is an Open Source platform for efficient document creation, publication, and distribution.

The Géoportail SDK is an Open Source JavaScript library for easily integrating Géoportail maps into websites, offering both 2D and 3D visualization options.

SIP Thor

SIP Thor is a turnkey platform providing real-time audio, video, chat, file transfer, and presence services based on SIP and related protocols.

SNClient+ is a modern, secure, and efficient replacement for NSClient++ that supports various monitoring systems and operating systems.

SOGo

SOGo is a scalable, Open Source groupware server providing a unified interface for email, calendar, and contact management.

SPFtoolbox is a web application for quick and easy DNS record lookups, including SPF and MX records.

SYGEFOR is an Open Source web application for managing training programs within the URFIST network.

SaltStack is an Open Source automation and infrastructure management platform.

Samba is an Open Source suite providing seamless file and print sharing between Windows and Linux/Unix systems.

SambaÉdu is a free, Open Source educational server solution for managing school IT infrastructure.

ScenariChain

ScenariChain: Open Source, turnkey applications for creating and publishing digital documents.

Scilab

Scilab is an Open Source, cross-platform software for numerical computation.

ScoDoc

ScoDoc is an Open Source web application for comprehensive student academic record management in higher education institutions.

Scovie is an easy-to-use, Open Source digital signage system built for high schools to efficiently manage and display multimedia content.

Screego is an Open Source screen sharing application for developers that prioritizes high quality, low latency, and easy installation.