Callboard vs GetSpot

Callboard is an open-source system for managing event proposals and the work from submission through schedule publication. Organizers can build CFP forms with conditional questions, shared character limits, participant rules and close dates, then route proposals to tracks. Reviewers see their assigned submissions, while organizers can apply weighted scores in two rounds. Accepted speakers use a portal to update session details, upload headshots and materials, finish tasks and read event resources.

For planning, organizers place sessions in rooms and time slots and use a conflict view to spot overlaps. Published schedules can be embedded and provide ordered speaker and co-speaker names, calendar invites, CSV exports and API access. Documented integrations include Accelevents CSV export, optional API push, an Airtable mirror and signed webhooks, with optional Svix delivery. AI abstract triage offers an advisory score and recommendation; it cannot write committee reviews or change submission status. The main application is described as one Cloudflare Worker using D1 and R2. Callboard is self-hosted under the MIT license, at free.

GetSpot is a free Android and iOS app for organizing recurring sports meetups with limited capacity and a fee. Organizers can create groups, share join codes, manage members and schedule events with a date, time, location, capacity and fee. When an event is posted, members can be notified. Once places fill, additional registrations go onto a waitlist, and the next person is promoted automatically when a confirmed place opens. Organizers collect payments offline using methods such as cash, Venmo or Zelle, then credit group wallets; registration fees are deducted from those balances. Withdrawing before the commitment deadline returns the fee to a member’s wallet. After the deadline, the fee is forfeited unless someone on the waitlist takes the spot. Organizers can approve join requests, add or remove members, credit wallets and send announcements. Players receive push notifications about events, registration changes and reminders. Users sign in with Google or Apple. GetSpot says real payment details do not pass through its servers because payments happen offline.