KnowledgeTree  

Open Source Document Management Software

KnowledgeTree™ is the leading commercial open source electronic document management software designed for teams and small to medium-sized organizations.

Alfresco is the leading open source alternative for enterprise content management.

Coupa Express is an e-procurement system that helps businesses automate and control their purchasing process. It is so much better than manual purchasing processes! Purchasing automation guarantees your business moves faster, while approval controls ensure disciplined decision-making every step of the way.

vTiger Honest Open Source CRM

http://www.vtiger.com/

vtiger CRM is an enterprise-ready Open Source CRM software mainly for small and medium businesses. vtiger CRM is built over proven, fast, and reliable LAMP/WAMP (Linux/Windows, Apache, MySQL, and PHP) technologies and other open source projects.