JS minifier from Google. Nice UI for doing it, also has an API for doing it programmatically.

evercookie – virtually irrevocable persistent cookies

evercookie is a javascript API available that produces extremely persistent cookies in a browser. Its goal is to identify a client even after they’ve removed standard cookies, Flash cookies (Local Shared Objects or LSOs), and others.

Periodic Table data

http://gist.github.com/570522

Periodic Table data

The basic data from the Periodic Table of Elements in JSON format.

WordPress Plugins for Multiple Versions

If you’re a WordPress Plugin developer, you may find yourself in the unenviable position of needing to maintain one of your plugins across multiple versions of WordPress. Until recently, I maintained the IntenseDebate plugin for versions 2.5 and up of WordPress, including versions 2.6 of WPMU and up. That’s a lot of versions (10 actually, not counting minor revisions). Here are some tips I picked up/developed to try to make my life a little easier along the way.

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Thingler

http://thingler.com/

Thingler

Neat real-time collaborative task list manager.

Lessons Learned

A few weeks ago I had a pretty rough time with something I was working on, so I thought I’d take the chance to share some lessons with you that I learned along the way. I’m taking these specifically from my experience as a developer of web-based systems, but I feel like at least some of them apply to a lot of other situations in life as well. YMMV.

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Code Conventions for the JavaScript Programming Language

http://javascript.crockford.com/code.html

Code Conventions for the JavaScript Programming Language

“This is a set of coding conventions and rules for use in JavaScript programming. It is inspired by the Sun document Code Conventions for the Java Programming Language. It is heavily modified of course because JavaScript is not Java.”