A few days ago, SANS Internet Storm Center guru Johannes Ullrich released the Whitelist Hash Database. This is a pretty cool little db, which tells you hashes of known files, like mspaint.exe, or cmd.exe on win7/xp/etc…check it out!
Now I saw the URL to this tool, and hit the backspace key a few times and came across: http://isc.sans.org/tools/. This is an awesome little collection of tools the ISC handlers have put together. I really like the browser headers tool, it show you all the stuff your browser is telling about you. (Check this from your iPhone!)
Not sure is that site is REALLY down? Check the sitecheck tool. There is also a hash generator which could be handy. All in all, another cool little link with some useful stuff, although nowhere near a full toolset. What collections of online tools collections do you like? I also personally like DNSStuff, enough to pay for a membership.