QuteCom (formerly WengoPhone) is a multi-platform VoIP client. The GUI is Qt-based, and the Video-over-IP engine is based on the eXosip, oSIP, oRTP, ffmpeg, and libgaim projects. The eXosip module is extended by a phApi module, which implements a high-level, easy-to-use call control API. It supports PC-to-PC voice, video, and chat. One can use a standard SIP service provider such as Wengo to be assigned an incoming number, make calls to PSTN/cell phones, get voice mail, and more. In addition to SIP/SIMPLE QuteCom provides IM functionality using libgaim, so it is compatible with all protocols supported by libgaim.
MMS Diary is a mobile phone weblog/diary for use when you are on holiday. It uses MMS (Multimedia Messaging Service) as a transport to upload texts and photos to your homepage. This is done with a PHP script that pretends to be an MMS proxy relay (the server that receives MMS messages is sometimes also referred to as MMSC).
open-cgf provides a 3GPP-compliant charging gateway function (CGF) as a sink for SGSN, GGSN, and other streamed CDRs on the 3GPP Ga/Gz interface using GTP' (GTP prime). Refer to 3GPP 32.295. These are common packet-switched data elements of GSM/UMTS mobile telephone networks. It aims to supply a telco-grade solution to this common, albeit very specialized, need. It does not decode the ASN.1 CDRs, but simply and reliably writes them to disk for later processing.
VOCP is a complete messaging solution for voice modems, with voicemail, fax, email pager, DTMF command shell and Text-to-Speech support, 4 graphical interfaces, and a Web interface. Callers navigate the system using a touch-tone phone and may send and receive faxes, voice mail, and pager messages, listen to text/HTML email messages, or execute configured programs on the host and hear the resulting output.
The SMSj library allows you to send SMSes (GSM) from the Java platform. It gives you full control over the SMS including the UDH field so you can create and send EMS messages, Nokia ringtones, and images. It provides a pluggable transport layer that allows it be used with a range of different SMS servers.