Odoo

mastodon.social - Mastodon

Rocket.Chat

concrete5 - Free CMS | Open Source Content Management System

Odoo | Open Source Blogs alternative to Medium

Telescope: Build your own Hacker News, Reddit, or Product Hunt.

unfoldingWord – unrestricted biblical content in every language.

SourceForge.net: MsgViewer - Project Web Hosting - Open Source Software

Home | CouchCMS - A simple and Open-Source CMS for web designers

Church.IO - List of Open Source Church Software

OneBody | ChallengePost

Church.IO - OneBody - church directory and private social network software

COSI 'Open' Religious Technology & Tools

Xiphos -- Open Source Bible Study Software -- Home

Discourse

ownCloud.org | Your Cloud, Your Data, Your Way!

Kaltura: Open Source Video Developer Community | Leading the Open Video Revolution

Elgg - Open Source Social Networking Engine.

Home » LibreOffice

FlexPaper - The web based pdf viewer solution

Nonprofit Software - Social Source Commons

ThinkUp: Social Media Insights Platform

Ushahidi :: Home

Open Source Cross-Browser WYSIWYG Editor

Vivvo :: News Content Management System

Pubwich — Open-source online data aggregation PHP application

A list of top (79) FREE and/or open source Mac software [Will be frequently updated] | Coder 007

Vanilla - Free, Open-Source Forum Software

OpenACS Home

Piwik - Web analytics - Open source