trixbox is an open platform. There are many open and close sources application that work with trixbox CE. Some can be installed on the CE box and other can connect to CE or work well with CE. This pages lists all the applications that work with links to get these applications working with trixbox CE.
If you have figured out how to get an application working with CE please update this page.
Openfire - xmpp server
Webmin - web based Linux system administration
3ware 3DM2 RAID monitor - web based administration for 3ware cards
avantfax hylafax iaxmodem - send and receive faxes with your trixbox
AsteriskC2D - AsteriskC2D, click to dial from Mac or iPhone