Code by Kevin has released version 3.2 of QuickWho (http://www.codebykevin.com/quickwho.html), a Mac OS X (10.6 and higher) application to help users look up Internet domain registrations. The new version sports native user interface tools, improves stability and fixes some bugs.
 
QuickWho provides an array of information about specific Internet domains. Curious about who owns a particular domain name? Do you want to contact them, or gather more information about them? QuickWho can help you with these tasks.
 
QuickWho is shareware. The download is a 30-day demo; you can purchase a license for US$24.99 to use the program past the trial period. The program is also available in the Mac App Store. QuickWho is Universal binary so runs natively on both PowerPC and Intel Macs.