southern writes:  

Some good online tools for the... ah... discerning webmaster/webmistress.
We picked out the best scripts you should choose to build your site.(tm)

Our Online Tools
» Link Exchange
» Check your Section 508 Standards
» Regular Expression tester
» Link-popularity checker
» Search Engine Submission
» Chmod calculator
» IMAP reader
» Search

External Online Tools
Display and format our RSS feeds on your site: Cut and Paste JavaScript, FeedDigest.com
Validate: validators, Xforms validator, CSS Translator, semantic-extractor
Image: MyImager.com (resize), kalsey Buttonmaker, type converter, Logo Generator
PHP: PhpObjectGenerator.com
Markup: Accessify.com
Misc: UITest.com, FaganFinder.com, FOAF-a-matic, freesql.org, Email encoder

I don't have the time or inclination to provide links to all the listed tools but they're here: Programmabilities