PHPMail2Fax is a drop-in replacement for HylaFax's mail2fax written in PHP for the PHP CLI. It will support pdf and tiff and have the ability to handle MIME e-mail. All contributions are welcome.
4PSA VoipNow PHP Demo Client is an Open Source software written in PHP demonstrating the 4PSA VoipNow SOAP API interface. The application handles a client registration and a phone terminal creation.