So how do I browse projects that are hosted on BitBucket? How can I search for projects by language? All I see on the main page are screenshots and signup link

So how do I browse projects that are hosted on BitBucket? How can I search for projects by language? All I see on the main page are screenshots and signup links. Why should I sign up if I can't even test drive the site by browsing existing projects? Would be nice to have an "Explore" feature similar to GitHub.