Much like Google, Yahoo or Bing, Rexxx.com is a search engine, but it specializes in pornography. Visitors can find virtually anything here from videos to images and GIFs. Sources include popular tubes sites like YouPorn, xHamster, Xvideos, etc.
Rexxx has indexed more than 19 million porn movies and clips, 200,000+ image galleries, 97,000+ GIFs, but also offers an index of pornstars containing close to 5,000 names. If that isn't impressive, I don't know what is. The number of ads, streaming quality or the ability to download clips, of course, all depend on which website you end up viewing the content of your choice on. However, you can expect to see everything from blurry amateur clips to lots of HD scenes with pornstars.
A website like this depends on functionality and Rexxx.com has some good tools to help visitors with their searches. First of all, you can pick between video, image, and GIF sections, all of which have a list of categories, an orientation setting (straight, gay, shemale, all), a favorites feature (registered users), and a filter for most relevant or newest results. The pornstar index offers popular tags, an advanced search engine, and a content overview for each performer. Finally, there aren't many ads here, only a few posing as thumbnails, but you can recognize them easily because they don't have a source website beneath the title.
Rexxx.com has tons of porn galleries, videos, and pictures as well good search features. You also get a great index of pornstars with an advanced search. It's a site that everyone should try out at least once.