http://www.asteriskpbx.com/

netkiller@shenzhen:~$ apt-cache search Asterisk
asterisk-app-dtmftotext - Text entry application for Asterisk
asterisk-app-fax - Softfax application for Asterisk
asterisk-app-misdn-v110 - V.110 protocol handler for Asterisk
asterisk-chan-capi - Common ISDN API 2.0 implementation for Asterisk
asterisk-chan-misdn - mISDN support for Asterisk
asterisk-oh323 - oh323 channel driver for Asterisk
asterisk-prompt-de - German voice prompts for the Asterisk PBX
asterisk-prompt-es-co - Colombian Spanish voice prompts for Asterisk
asterisk-prompt-fr - French voice prompts for Asterisk
asterisk-prompt-it - Italian voice prompts for the Asterisk PBX
asterisk-prompt-se - Swedish voice prompts for Asterisk
asterisk-rate-engine - Asterisk least cost routing module
asterisk-sounds-extra - Additional sound files for the Asterisk PBX
destar - management interface for the Asterisk PBX
gastman - GUI tool for Asterisk administration and monitoring
iaxmodem - software modem with IAX2 connectivity
kiax - IAX VoIP softphone
libiax-dev - implementation of the Inter-Asterisk eXchange protocol (devel)
libiax0 - implementation of the Inter-Asterisk eXchange protocol
op-panel - switchboard type application for the Asterisk PBX
asterisk-prompt-es - Spanish prompts for the Asterisk PBX
asterisk - Open Source Private Branch Exchange (PBX)
asterisk-bristuff - Open Source Private Branch Exchange (PBX) - BRIstuff-enabled version
asterisk-classic - Open Source Private Branch Exchange (PBX) - original Digium version
asterisk-config - config files for asterisk
asterisk-dev - development files for asterisk
asterisk-doc - documentation for asterisk
asterisk-h323 - asterisk H.323 VoIP channel
asterisk-sounds-main - sound files for asterisk
asterisk-web-vmail - Web-based (CGI) voice mail interface for Asterisk
netkiller@shenzhen:~$