- Extension (Uid): calendar (1828) [Extended Calendar]
- Extension (Uid): tt_calender (12)
- Extension (Uid): sys_workflows (33) (Task Center, Tasks, Workflow)
- Extension (Uid): sys_todos (35) (Task Center, Tasks)
- Extension (Uid): tt_board (18) (Message board, twin mode)
- Extension (Uid): mininews (172)
- Extension (Uid): tt_guest (15)
- Extension (Uid): tt_news (20)
- VCD-calendar
- Nochmal Extended Calendar
- Extended Calendar Problem