speex

ZOIPER 2.0 Free SIP and IAX is a user-friendly softphone, compatible with Asterisk or any other SIP or IAX capable system. High-quality VoIP experience with features like: SIP + IAX protocols, SIP over TCP / TLS / UDP with STUN support, Echo cancellation, DTMF tones, Multiple audio devices support, Automatic user registration, Call transfer, Hold function, Multilanguage support, Portable storage compatibility, Codecs: GSM, ulaw, alaw, speex, ilbc

Access your music with a phone keypad. Fast. Dial the name, hit Play, boogie.

Drill down into even the largest music collection and find your selection with just a few taps. All your music's metadata is indexed for instant access.

Now featuring CD ripping!

Provides MP3(ID3v1, ID3v2), Ogg/Speex/Flac Vorbis tags editing and file renaming functions using special variables, RegExpr FreeDB. It can also be used to create WinAmp-compatible playlists (M3U files), Information (NFO) files, Parity archive (PAR) data recovery files, Simple File Verify (SFV) and Sound Verification (.SV) checksum files. You can export and import ID3 tags to and from XML and comma delimited text files, verify CRC/MD5 checksums and more.

VoIPerized is a so called VoIP (Voice over IP) program. VoIPerized enables you to make free audio calls to other people who also run VoIPerized. When making VoIPerized the focus was to minimize the latency, because other VoIP programs always seemed to have an irritating lag which makes the conversation seem unnatural. By using the open source Speex audio codec the audio quality is far higher than any normal telephone call.