VovSoft Domain Checker - is an effective application that allows you to batch process multiple entries.
VovSoft Domain Checker is a simple, but powerful whois lookup tool for users that require a domain availability analyzer.
The software supports the most common TLDs, and users are free to add new ones. Anyone interested in releasing new websites will benefit from this utility, as it allows one to check for domain availability.
Download: 
VovSoft.Domain.Checker.8.6.0.rar - 3.3 MB
VovSoft Domain Checker 8.6.0 Portable