Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Bylde - Bylde is a SaaS platform you can use to Start, Manage and Grow your groups and communities.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
SmartMoneyMatch - Create a 100% free account to connect to the global asset management industry. Get access to the best money managers or list your investments, RFPs, jobs, events, business services, and more.
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features