Commandline tool for Motorola Razr V3xx owners to get their iCal (or other ICS compliant) calendars to their phone.
AccGenX is a full-featured Accounting project for Linux. Using PostgreSQL as its base, it is fully customisable to add and subtract specialty modules such as Trust Accounting (for lawyers) and Patient Management (for doctors).
Synchronize calendar data between google calendar and Windows Mobile outlook data. Support two-way synchronization, multiple calendars and etc.
SIMILE-timeline based application. Calendar desktop widget offering GANTT chart like view. Uses SuperKaramba for KDE, gDesklets for GNOME. Standalone version for Windows.