backlink checker

#1 Bulk PageRank Checker can check very large lists for Google PageRank

MSN Block Checker is a script which check who deleted or blocked you.

Smart Mail Checker will notify you about a new incoming important message.

MSDN article "Creating a Custom Spell-Checker with Word 2003 and Visual Basic

A spell checker designed for use with on-line communications programs.

Mail Checker - Your mail box watch dog.

Freeware Spell Checker for windows clipboard!

The SEO Rank Checker is a nice little search engine.

Aella Email Address Checker is designed to check long lists of email addresses

Website uptime checker tool evaluate realtime performance status of your website