Validating HTML from behind a firewall
Steve Clay’s Private Validator is a really handy tool for people who working on intranet sites who want to be able to run them through the W3C’s validator. It’s a PHP script which you install on a server behind the firewall that has access to both the intranet and the outside world. It comes with a bookmarklet which activates the script. When the script is activated, it grabs the indicated page, then uploads it to the external validator and grabs the result. It’s pretty neat, but even neater would be some kind of desktop application that did the same thing. I can almost feel a Python script coming on.