Total Validator - Total Validator can check your website to help ensure that it is accessible, uses valid HTML and CSS, has no broken links, and is free from spelling mistakes.
CapsLock Indicator - CapsLock Indicator is a small utility that indicates the state of the Num lock, Caps lock and Scroll lock key.
W3C Markup Validation Service - Validates HTML markup of web pages, one at a time.
Keyboard Notifier - Title: Keyboard Notifier Description: Keyboard Notifier sits in the system tray and notifies the user as to the state of the Caps, Scroll and Num lock keys. Designed for systems with ill-placed or …
Rocket Validator - Site-wide Accessibility and HTML validation made easy. With a single click, Rocket Validator will check thousands of web pages on your site for Accessibility and HTML conformance, producing a detailed, actionable report on seconds.
Keyboard LEDs - Indicators for Caps Lock, and Num Lock.