Tags: validator

Unicorn

An all-in-one validator from the W3C: markup, CSS and feed validation.

W3C Validator Donation Program

The W3C validator—one of the most valuable tools in the web developer toolkit—is in danger. Please help out. And please spread the word.

W3C Validator, now with HTML5 flavour - W3C Q&A Weblog

Henri Sivonen's HTML5 validator has now been integrated into the W3C validator.

Validator S.A.C. - Stand-Alone W3C HTML Validator Application for Mac OS X

For those times when you need to validate your markup but you don't have a 'net connection.

What's New at The W3C Markup Validation Service

The Validator got a new lick of CSS paint and it's looking good.

Documentation of the Programmatic Interface (API) to The W3C Markup Validation Service

The W3C Validator now has an API. It's SOAP only unfortunately, but this could still prove to be immensely useful for rolling into a CMS.