openDesktop.org - The website openDesktop.
Odoo - An all-integrated business app suite to unleash your growth potential.
SourceForge - The Complete Open-Source and Business Software Platform.
Infor ERP - An ERP suite for the manufacturing & distribution industries
Freecode - Freecode (formerly known as Freshmeat) is one of the legit open source development platforms that will be the key for developers and programmers to have a streamlined process via having enhanced collaboration and coding leverages.
Adempiere - ADempiere is a commons-based peer-production of Open Source ERP Applications.