I have updated the HashTools page with v0.3. This version adds support for SHA256, SHA386 and SHA512 hashes. There are also a few minor interface tweaks as well, to deal with the longer hashes generated with these algorithms. This brings the total hash types generated up to 5.
If you have any requests that you would like to see incorporated into the next version of HashTools just drop me a line. You can get my contact information from the Contact page.