Some of the major telecommunication relay service (TRS) market participants are Avaya, Bell Canada, Captel, Cisco Systems, Convo Communications, KCOM Group, Purple Communications, Relay UK BT, Skype Technologies, Sorenson Communications, T-Meeting, T-Mobile USA, ZVRS and DeafTawk.

Text to speech software Panopreter Basic reads text with natural sounding voices and converts the text to spoken audio files in mp3 and wav formats.

Panopreter.com released text to speech freeware program which reads written text aloud and save the spoken speech as mp3 and wave audio files.

Text to speech software Panopreter Plus reads aloud text with natural sounding voices and converts the text to spoken audio files in mp3 and wav file formats.