A few things I’ve discovered today that look potentially useful in the future:

• Antenna House Formatter V5 – converts HTML and CSS to PDF, including support for MathML. Heck, supporting CSS well is a plus – most HTML to PDF conversions don’t. Hat tip to one of our clients for finding that.
• jQuery Tools – there are plenty of JavaScript UI libraries around, but this one looks better componentized than most. It’s also a good, small set of components that normal web pages are likely to want, rather than being more specifically useful in web applications, though it could be used there too.
• FlowPlayer – actually I knew about this one but only just got around to looking at the details. Handy looking open source flash video player. They’ve somehow converted the GPL into a license that requires attribution which is really odd, most likely to keep their commercial licensing option open. It’s their license so they can do what they want with it but I would have thought there’d be a better fitting license.