Zeplo.io - Message queue as service.
Coworker.com - Looking for the best coworking spaces? Read real reviews, get prices, see photos, view maps and more. Find your perfect coworking space in 100+ countries!
slashQ - Queue management system
Croissant - Unlock the hottest coworking spaces in your city
Zenlist - Google ads for classifieds
Deskpass - Access 100+ coworking spaces with one membership