The 1.0.0.63 version of xtop is provided as a free download on our website. The program is included in Communication Tools. The xtop installer is commonly called xTopWF.exe. The most popular version of the tool 1.0. This free software is a product of Intelligent Mechatronic Systems Incorporated.
From the developer:
xtop™ is walk-up technology that seamlessly extends your smartphone communications and ‘personal cloud’ in front of you where ever you are. With xtop, you can surf the net, send and receive texts, IMs, emails and even make and receive calls directly through your netbook, laptop or desktop PC – anywhere
You may want to check out more software, such as Addict iChat, CallButler or Safe Chat, which might be related to xtop.