Available Domains finds attractive domain names for your personal or corporate web site. Designed as a great time-saver, it can check several domains' availability simultaneously. Even best domain name checkers implemented as Web tools cannot provide the same functionality as this software can. With newly added Quick Mode feature, it can generate hundreds domains from a single keyword.
More info:
hxxp://www.alphacomsoft.com/avdomains.htm

Just tried this and don't like it.