Mark this down as a cool tool for your website-building toolkit…
Ever wondered what CMS or web server a certain website was using? Wonder no more! Simply enter the URL of that interesting site into builtwith.com and voila! – this site will tell you all that geeky stuff!
For example, look at their CMS page. For the top million websites that BuiltWith tracks, they find that 62.87% of websites use WordPress, 14.77% use DotNetNuke, 10.25% use Joomla, and 3.40% use Drupal. Then when you move to their Top 10,000 sites graph, those percentages change quite a bit.
Or look at the Top Payment Distribution Services – look at the top 10,000 sites graph. % us Paypal (duh), 35.94% use CCBill, 10.94% use Google Checkout, then Flattr, Mollie, and Amazon Payment Services are there, too. CCBill, Flattr, and Mollie? Never heard of them.
So – use it to check out your website against others, use it as a discovery tool to learn about new services. Pretty handy!