Block unwanted phone calls by caller id, with professional log.
License: Shareware
OS Support:

IVR Studio Interactice Voice Response Designer.
License: Freeware
OS Support:

Record and save many hours of phone calls - with just a click of your mouse.
License: Shareware
OS Support:

Provides access to text messages over standard POP3 and SMTP email.
License: Shareware
OS Support:

PC to Phone Auto Dialer Telephone Voice Recording Broadcast.
License: Freeware
OS Support:

Free voice calling between employees over the Internet with OfficeSIP Server.
License: Freeware
OS Support:

A powerful multiple-line client/server Voice, Fax and Data messaging solution.
License: Demo
OS Support:

Professional Ringtones for your cell-phone for (not only) business demands.
License: Commercial
OS Support:

VoIP Recall-button for the own Website - nothing costs the customers.
License: Freeware
OS Support: Win 3.1x,Win95,Win98,WinME,WinNT 3.x,WinNT 4.x,WinXP,Windows2000,Windows2003,Windows Tablet PC Edition 2005,Windows Media Center Edition 2005,Windows CE,Windows Mobile 2003,Windows Mobile 2005,Unix,Linux,Linux Console,Linux Gnome,Linux GPL,Linux Open,Sour

Asterisk Outlook CRM integration Salesforce SugarCRM Free for life.
License: Freeware
OS Support: Windows2000,WinXP,Windows2003,Win Vista