gnokomania
Free Win32 GUI tool for mobilephones ( based on gnokii library ) , reading and writing of phone book, ringtones, operator

Communications::Telephony

tsemgr
tsemgr is a GTK+ application to manage the SonyEricsson T68 mobile phone. You can read and send short messages (SMS), view

Communications::Telephony
Office/Business

Neuron Home Networking Platform
The Neuron Home Networking Platform provides software applications that bring advanced functionality to a home network.

Communications::Email
Communications::Telephony
Internet
Multimedia::Sound/Audio::Players
Multimedia::Sound/Audio::Speech
Multimedia::Video

SIP Class 5 Soft Switch (SoftSIP5X)
SoftSIP5X is a Win32 based Class 5 SIP Soft Switch written in C

Communications::Telephony

scud
Software to tell your CID capable modem to answer annoying calls

Communications::Telephony

iaxclient
A lightweight cross platform IP telephony client using the IAX protocol, designed for use with the asterisk open source

Communications::Conferencing
Communications::Internet Phone
Communications::Telephony
Multimedia::Sound/Audio
Multimedia::Video

Phone Manager
send SMS, manage your phone book, set alarms and more

Communications::Telephony

H.323 Channel Driver for Asterisk
An Open H.323 based channel driver for the the Asterisk PBX. This code has now been intergrated into the Asterisk source

Communications::Telephony

RingTone Converter
Motrola ringtones are hard to find. So i decided to make a program to allow me to convert the ones i have found into key

Communications::Telephony

Dialer.Net
a .NET Windows TAPI Dialer With Outlook Contects Support

Communications::Telephony