So, here the name of that wonderful program Gabtastik.
Gabtastik is a Site Specific Browser (SSB) for web chat services.
Gabtastik lets you keep chat sessions open on your Windows desktop outside of your regular web browser, using minimal screen real estate and system memory.
Gabtastik also lets you specify window display level and window opacity, and lets you toggle quickly between supported chat services.
- Windows XP with .Net 2.0 or Windows Vista
- Adobe Flash Player
- Web chat account
Download it from here
Thanks ( dark-Hackerz)