3D for Reddit is described as 'provides a very elegant 3D experience for browsing Reddit. Navigate the museum-like environment with the familiar WASD keys. And simply add /r/subreddit to the URL to switch rooms!' and is an website in the social & communications category. There are more than 10 alternatives to 3D for Reddit, not only websites but also apps for a variety of platforms, including Android, Mac, Windows, iPhone and Android Tablet. The best alternative is RedReader, which is both free and Open Source. Other great sites and apps similar to 3D for Reddit are rif is fun, reditr, Uforio and RedditOS.
Alien News is an unofficial Reddit client for Windows Phone 7. Never be bored again with access to Reddit at your fingertips. The best of the web is only a tap away. Alien News allows you to browse Reddit, vote on submissions and comments, and participate in discussions.
Karma is a Reddit client built for simplicity. Karma seeks to get out of the way and let you get back to what you want to do: view links, upvote comments, open orangereds, and amass that sweet, sweet karma.