Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Paperless Post - Paperless Post is an online platform for creating custom card and invitations.
Mobilizon - A free and federated tool to get our events off Facebook
Feathr - Feathr is a marketing platform designed just for event organizers.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Followme - FollowMe from Ringdale is the complete document output management solution, which provides unrivalled flexibility for organizations looking to reduce costs, increase security and improve efficiency.