| Companies | Applications | Resources |
| Link | Description |
|---|---|
| AstriPedia | Asterisk Encyclopedia |
| Voip-Info Wiki | ... lots of info - much is for old versions of asterisk |
| Asterisk Cookbook | O'reilly Asterisk Wiki Book |
| Voiceroute | Voiceroute (not sure about what this does) |
| PBX in a Flash | Asterisk Distro w/ GUI on CentOS |
| Fresh Air Studios Ltd | Company (UK) providing IVR Voice Prompt Recording and MOH mp3 production services for Asterisk/Trixbox etc. |