cling.com (recommended)
Simple, card-style boards and collections. Example board created by the Coqui Web Team:
Coqui
Coqui Web Cloud Computing/Team Leader: Richard Boyd. Recommended Web Boards
Shortlist of board-style web portals the Coqui Web Team recommends and example boards we've created for each.
“Which web portal do you recommend to create web boards?”
netboard.me (recommended)
Flexible, free-form boards that can mix content types. Example board by the team:
Open netboard.me board
padlet.com (recommended)
Popular for classrooms & teams — polished, shareable walls. Example board by the team: