Some time back, I StumbledUpon this post: 10 sites developers should have in their bookmarks. I wasn’t familiar with many of them, but am now. I particularly like the MySQL Format Date site (something I’m always looking up), the .htaccess Editor (ditto), and test everything, which will do lots of stuff at once: validate the CSS and HTML, check SEO factors, and so forth. Most of the comments in response to the post are people similarly indicating surprise that they were unfamiliar with these bookmarks, but you’ll find some additional recommendations there as well.
10 Sites Developers Should Have in Their Bookmarks
