List of useful Tools for Web Developers

I’m putting together a list of (limited) free online tools which make my day easier. I’ve personally used all of these, you won’t see anything I do not use. I believe other web developers will find these services as useful as I have! 🙂
Shoot me a message if you know of a website or service I should try out!
(the list is growing each time I get some free time)
Website Speed Test (free)
Favicon generator (free)
Bulk browser testing (free)
Site validator (free)
Load Testing (free)
Automated uptime status check (free)
WhoIS lookup (free)