GatherTix
6.4#19 in nonprofit event management softwareC$1.50 one-timeFree planWeb
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It suits organizations running in-person events that need registration, ticketing, check-in, and attendance reports. Referral tracking and audit trails may also suit groups coordinating members, treasurers, or boards.
Humanitix suits event hosts who need ticketing, guest management, promotion, and sales reporting. It also offers a free option for free events and a Hosts app for event teams.