FOSS Toolkit

A directory to support OASIS - Open-source Alliance for Social Innovation & Sustainability, Free and Open Source Software (FOSS), Frameworks, Showcases to help change makers leverage technology to amplify their impact.

open-source

free

Signal

One of the most Secure messaging apps to communicate safely and privately with your team and communities

open-source

free

Matrix Messenger

A secure, end-to-end encrypted alternative to traditional centralised messaging platforms

open-source

freemium

Mattermost

Secure messaging platform that is an alternative to Slack, Microsoft Teams, and other team collaboration tools