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.
TigerCube is an operating system that offers an all-in-one communications platform (including an advanced phone system and email), network security (with a firewall, content filtering, and virtual private networking), file sharing, and a fully integrated backup solution under a single, unified environment. TigerCube is free to use for up to 5 users.
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.