audio checker

A stand-alone multi-lingual spell checker for any Windows application.

Check the health of your disks or SSDs for free with Smart Disk Checker

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

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

Free english spell checker for windows installs in seconds

Filler Item checker - finds filler items on amazon to qualify for free shipping

Rank Checker checks a website's rankings on google.com and google.co.uk.