CrystalCalls 15.0 was free to download from our software library. This free program was originally developed by CrystalCalls. The program's installer is commonly called CrystalCalls.exe. The most popular versions of the tool 15.0 and 4.0. The software belongs to Communication Tools. This PC software works fine with 32-bit versions of Windows XP/7/8.
From the developer:
To place calls from the privacy of your home on your own PC, using your dial-up, broadband or satellite Internet connection, follow a few easy steps and download our FREE Internet telephone software. It is so simple to use, it makes calling from your computer to any telephone around the world as easy as 1-2-3.
You may want to check out more software, such as WinPopup Speak, Sametime Client or ISDNphone, which might be related to CrystalCalls.