bulletin-board
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NodeBB
The Toronto team behind NodeBB spent a decade rebuilding the humble internet forum for the real-time web. Now they are wiring it into the fediverse.
vBulletin
The World's Leading Community Software - vBulletin has been powering online forums for more than two decades, and it is still shipping.
Padlet
Padlet is a San Francisco- and Singapore-based software company behind the popular collaborative platform of the same name, where users post text, images, links, files, and audio to shared digital bulletin boards called 'padlets'. Founded in 2008 as Wallwisher by Nitesh Goel and Pranav Piyush, the company grew into one of education technology's most widely used tools, reporting tens of millions of monthly active users - most of them teachers and students. It has since expanded beyond bulletin boards into an infinite-canvas whiteboard called Sandbox and a suite of AI creation tools, while remaining a small, largely bootstrapped team.