Zoji - As claimed by the developers of this Zoji, it caters online tools to aid you plan activities off-line.

Kajabi - Kajabi is the only Knowledge Commerce platform today with everything you need to market, sell, and deliver your knowledge online.

Whoozin.com - Free RSVP Online | Track RSVP’s and Sell Tickets for your events and recurring meetings.

Tendenci - Tendenci - The Open Source AMS is a cloud-based​ all-in-one management SaaS solution for Non-profits and Associations.

Manvite - As the name of this service suggests, the users can avail easily and simply invite rather than online summons that are blessed with flowery fonts and dabbling champagne glasses.

YourMembership - YourMembership provides membership management software integrated with social networking features.