Digium

DAHDI Tools (Linux)

Free

Interface applications with telephony hardware.

LibPRI for Linux

Free

Implement signaling for ISDN-PRI and ISDN-BRI on your Linux system.

Switchvox Softphone

Free

A softphone app for use with Switchvox, Digium's award-winning IP PBX. Switchvox SMB version 5.10 or later is required. Please see the Switchvox...

LibSS7 for Linux

Free

Overview of LibSS7 for Linux

Asterisk Add-Ons (Linux)

Free

Enhance Asterisk with Add-Ons for Linux

Asterisk for Linux

Free

Powerful Open Source Telephony Software

AsteriskNOW for Linux (64-bit)

Free

AsteriskNOW: Open Source Telephony Solution

AsteriskNOW for Linux

Free

Comprehensive Overview of AsteriskNOW for Linux