Rapid applications development tool and libraries for FPC
Personal and small-business finance manager
Open source ERP and CRM web software for business
GTK+ comic book viewer.
Audio converter and CD ripper for various formats
command line tool to manage email (alias-)domains/accounts/aliases …
#1 alternative to Microsoft Project : Project Management & Gantt Chart
Building High Quality ERP and Accounting Software for SMB & SME
Contao Open Source CMS (fka TYPOlight)
PXell - Online project management.