Here is a list of Wikipedia entries which describe the feature-set which should be ultimately covered by the Tiki Suite.

Tiki

Current

Software Categories
Content management system (CMS) / Web portal
Wiki engine / Enterprise wiki / Semantic wiki / Application Wiki
Groupware
Web application (browser based)
Internet forum (message board)
Issue tracking system / Bug Tracker / Form generator
Help desk
Knowledge base
Geospatial Content Management System (GeoCMS)
Social Software / Enterprise social software
Blog
Personal information manager
End user programming / Situational application
Document management system (DMS)
Spreadsheet

Eventually in Tiki

Customer relationship management (CRM) / Membership software
Learning management system (LMS)
Human resource management system (HRMS)
Decision support system
Enterprise resource planning (ERP)
Electronic Document and Records Management System (EDRMS)
Project management software We already can already a lot of with wiki and trackers but we need Gantt charts.

To be covered by the Tiki Suite

Unified communications
Unified Network Platform
mail server
Web analytics
Web conferencing
Web-based VoIP
Screen sharing
Whiteboard
Videoconferencing
Video editing software
PHP accelerator