Web site: ihu.sourceforge.net
Category: Network
Subcategory: VoIP Clients
Platform: Linux, BSD
License: GNU GPL
Interface: GUI
Wikipedia:
First release: 2003
I Hear U – a Voice over IP (VoIP) application for Linux, that creates an audio stream between two computers easily and with the minimal traffic on the network. It uses Qt and Speex, with low latency, crypted stream, minimal use of bandwith, and without intermediary servers. It is the easiest way to talk real-time with your friends (like phone) on the internet or LAN.
Main features:
– Peer-to-Peer: the communication takes place directly between the computers (UDP and TCP both supported), without need of session protocols (such as SIP or H323) or other servers in the middle.
– Good audio performance: IHU was born to give the best audio performance, low latency above all. For this purpose IHU is compatible with ALSA, now the default Linux sound architecture, but also with JACK, a low latency sound server. For the audio compression, IHU uses Speex, a codec optimized for speech (and completely free and open source).
– Crypted stream: you have also the possibility to Encrypt/Decrypt the stream using a fast hybrid cryptographic system (RSA + Blowfish)
– Command-line support: the Qt GUI is not strictly necessary, you can run also a textual IHU from command-line (for example if you need to run the program on remote computers).
– Free and Open Source: IHU is totally free and distributed under the terms of the GNU General Public License.
its out of date, but ekiga still does to job done, and is open sourced application