If there's a free tube site that doesn't require a special introduction, it's Redtube.com. This place is packed with thousands of porn videos of every kind. There's something for every filthy fantasy or desire here. Whether you like em young, black, brown, old or kinky or anything in between, it's all here.
Trying to get a grasp on how many videos there are on Red Tube is quite the task as there are regular updates and a huge collection featuring tens of thousands of videos already. You can find everything from short homemade clips to cam girls and professionally shot full-length scenes from the biggest studios. Quality can vary, with cam and real amateur videos being on the lower end of the spectrum, but there are loads of HD quality videos available for streaming. Moreover, you get access to live cam shows and classifieds.
If you want to download your favorite porn clips, you'll have to register which also unlocks some sorting features. There's also a premium monthly subscription ($9.99) that removes Ads and lets you watch higher-quality as well as more exclusive content.
The user experience is pretty typical of what this type of site offers. You have various categories, tags and lots of other filters to sort and browse content, besides a model index. Regarding ads, there are somewhat distracting banners and pop-ups.
If you're not a fan of Red Tube already, you should check it out. It's part of a bigger PornHub network and has everything you could want in a porn video, as well as a few extras like live cams and a premium membership.