Css/xml/html Test and Repair Tool
Validating local files can be difficult or impossible with web based tools. Tart can validate local files, even when youre offline, since it is a standalone application.

Finding problems isnt your goal, producing compatible web documents is. Tart allows you to Categorize messages so that you can Focus on real problems. And you can quickly repair problems using Tarts built in editor.
* Fixed problem that caused Atom and RSS validation to hang.
* Fixed problem that prevented HTML from being validated.
* Fixed layout problems. you can free download Illumit Tart 0.8.1 now.