NextHub!

Riple is your go-to community for discovering and sharing the best online content in groups.

Grow your audience with a custom news community. Users can signup, submit links, like them, and comment. Style the look and feel of your community to match your brand. Use any domain or subdomain you wish for your community. Free and easy.

Topick is a single platform where passionate communities discuss the topics that matter to them. Topick offers a simple and welcoming experience:

TopTopic is an online community where members earn revenue from their posts, comments and moderation activities. Rather than run ads, we use member up-voting (no down-voting) to both raise the exposure of content, and drive revenue to the creators.

ZapChain is a collection of communities where you can earn Bitcoin for posting great content and joining discussions.

An unmoderated discussion forum anyone can join.

Reddit To Go! is your go-to reddit app for Windows 8! It's designed to fully take advantage of Windows 8 features to make your redditing experience the best it can be. Browse the front page or any subreddit, log in with your reddit account, vote, comment, submit links, search, and more! Check out the App Features section below for a larger list of what this app can do, and be sure to check out all the screenshots.

CornerHub is a social network. Create discussion topics, follow other users, share your updates, photos, videos and music. You can create the groups.

ForumPromotion.com; a bookmarking & social networking curation hub, but also the easiest way to discover new and interesting forums across the Web. Anyone can submit, vote up/down, and comment on links. The most trusted forum promotion platform & topic curation community. All The best message board threads, all in one place. 100% free!

Twincl is characterized by forum (including link sharing), Q&A, review and blog sites, using CommonMark as its writing format. Twincl features innovative Markdown editing, topic trees, voting/remarks, selected posts, senior authors, logarithmic scales, and more.