Yahoo Messenger Invisible Detector - Free Software Download
Beside of you can use web base invisible checker, you can also use a program or software that can check invisible status of yahoo messenger ID. There a tons of software that has an aim to check invisible status. One of the most popular invisible software that has GNU license is Buddy Spy. You can download freely at www.buddy-spy.com (not available anymore, the site has been parked).
For other software of Invisible checker below you can download the available list of Invisible Checker. Its free to download and use.
Invis Checker by Fire: Download | Download | Download
Invisible Checker Download: Download | Download
Free Download Y Invi checker at Rapidshare: Download Invi Checker
Free Download Y Spy at RapidShare: Download Y Spy
Free Download Buddy Spy at RapidShare: Download Buddy Spy
Free Download Y Spy Buddy Sniper at RapidShare: Download YSpy Buddy Sniper
Invisible Download: Download