dns checker

Zwhois looks up ownership, expiration, dns info for domains in any tld, or ips

This is a feature-packed e-mail checker.

Mokum Mail: EMail Checker / Reader, HTML EMailer and WEB Browser, all in one!

Use hash checker and generator.

Desktop calendar with many functions.Events,tasks,GMail checker,notes,feed RSS

A tiny email checker,notify user on new email messages.Unlimited accounts,free.

A specialized browser , link checker, and editor for dmoz.org.

Remove the Block-Checker adware/spyware/malware.

A powerful and handy toolbar for IE with form filler and spell checker

CheckP3 - The Email Checker.