Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Digitevent - The powerful software to manage your event participants.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Grenadine Event Planner - All-in-one event management software. All your needs in one place: event planning and scheduling, event website, registration, event mobile app, and APIs.
Bigtent - BigTent is a web-based organization and communication portal for groups.
Arcat.XP - Arcat.XP is an Event Management Software that helps organizers, attendees, exhibitors, and sponsors to manage their events with ease from start to finish.