Nikita the (Validation) Spider
If you have ever tried to ensure that your website validates against its declared doctype, you probably know that it is a task that consumes a fair amount of time, even with tools like the HTML Validator or the Web Developer extensions for Firefox.
In comes Nikita the Spider, this web application performs bulk validation of the pages within a website. It can run unattended and have a report sent to an email address that you specify. Unfortunately, the site is unable to accept new requests since the its mention on 456 Berea Street.
Users will need to possess some technical knowledge in order to make sense of some of Nikita’s advanced configuration settings. While the descriptions go towards explaining what the individual options do, it might confuse the less technically inclined. In any case, the default settings are all you need to start using the tool.