Killer Services, may be:

• General search tool - tool which search everything in the desktop similar to Google Desktop, Apple Spotlight or Beagle and with interface same as Zitgist or Search DBpedia.org.
• Graph visualization tool - tool to display semantic resources with relations and to navigate on them like TheBrain!, TH!NKMAP, TouchGraph and others.

Personal Services:

• Personal money tool - tool which keeps track of your personal expenses, and helps you keep track of your monthly bills or any recurring payments.
• Music, video and photo manager tool - tool to work with personal's digital collection in a consistent manner.

System Services:

• Categories Manager - tool to organize thesaurus to tag resources with them.

Communication Services:

• Extraction Agent - a Firefox plugin for extracting semantic information from the Internet like Zotero.
• XMPP/Jabber Agent - semantic agent for xmpp / jabber network which finds and shares content about resources like xOperator or JQBus.
• P2P Agent - a semantic agent for P2P network to search in the global manner.