Xackmail - Xzeroscripts

Xackmail - Real-time online email backup - Storage

Xanco~ - Mobile phlog & vlog - Publishing

Xanga - Blog rings - Community

Xaraya - Open source framework for PHP - Software

Xboxkicks - Digg Xbox news - Dead, Rate

Xcavator - Search & sort images - Search

Xcellery - Online spreadsheet - Office

Xdrive - Store & share your data - Storage

Xepient - Content management system - Software

Xero - Accounting solution - Finance

Xfire - Instant messenger for gamers - Communicating

Xfruits* - Mix, make & share feeds - RSS

Xhtmlized - Have your design converted into a web site for $ 249 - Publishing

Xilinus - Social bookmarking - Bookmarking

Xin - Online OS for Ajax serverapps - OS

Xindesk - Desktop operating system with file sync - OS

Xing** - Community for entrepreneurs & professionals - Community

Xlr8mobile - Mobile content distribution solutions - Phone

Xmailharddrive - Store data thru Gmail - Storage

Xmbforum - Bulletin board solution - Software

Xmetal - XML authoring suite with 6 applications - Software

Xmgimage - Photo editor - Photo

Xmlhttprequest - Track Web 2.0 news - News

X-moment*~ - Publish an event at a location - Geo

Xone8 - Start your own tv network community - Video

Xoops - Content management system for portals, communities, single website - Software

Xpanity* - Communicate on every web page - Communicating

Xsto - Upload, store & manage your photos - Photo

Xtube - Upload & share your porn - Porn

Xufe - Use the wisdom of crowds to decide on your bet - Gambling

Xuqa - Publish yourself & connect to anyone - Community

Xzeroscripts - Build your own classifieds pages - Software