Pages in this section are kept at the addresses they had on our original site. Some of them have been linked to from elsewhere for well over a decade, and breaking those links to tidy up our own URL structure would be a poor trade. The content behind them is maintained, not frozen.
Pages kept here
- Open Source Voice and VoIP Applications in the Telecom Industry. A directory of open source software that carries real voice traffic, covering switches, SIP proxies, media servers, softphones, contact centre and billing platforms, and the newer voice AI components. Rechecked and rewritten in September 2026, with the retired projects moved out of the main list rather than left there looking current.
Everything else
Our current work lives outside this section. The open source projects page is the canonical index of what we build and release, and the blog carries the engineering write-ups behind it.