OpenMediaVault: NAS for open source

SugarCRM CE: A powerful, completely free CRM

Customer Service, Sales & Marketing

WordPress: The DIY website platform

Sales & Marketing, Web Publishing

Magento CE: Open Source eCommerce

eCommerce, Sales & Marketing

Mediawiki: Your Own Private Wikipedia

Collaboration, Customer Service, Documentation, IT, Management, Web Publishing

ownCloud: Advanced File Sharing & Collaboration

Collaboration, IT

Drupal: A powerful content management system

IT, Web Publishing

Odoo: A Comprehensive ERP System

Collaboration, Customer Service, eCommerce, Management, Sales & Marketing, Web Publishing