Cheat Sheets & Quick Reference Cards for Developers
A useful list of the size, format and context of the favicons and launch icons used by browsers and mobile devices.
A quick way to compare the page load speed of two pages. Everything is done client-side, so you're comparing on your own network, which is great if you need to test a site yet to be in production.
This looks interesting but "The lifestyle mag for web professionals" sounds like an oxymoron.