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Callboard

callboardhq.com

Free plan WebAPISelf-hosted
Visit callboardhq.com
Spec score 8.5 #5 of 34 in Event Scheduling Software

What it is

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.

Spec sheet

Purpose
Callboard manages event proposals, reviews, speaker onboarding, agenda planning, and publishing the public schedule.Read 9 Oct 2026 · callboardhq.com
Intended users
Callboard describes itself as speaker and CFP management for events, covering the workflow from public submissions through organizers, reviewers and speakers.Read 4 Oct 2026 · docs.callboardhq.com
Deployment
The main application is described as one Cloudflare Worker using D1 and R2.Read 4 Oct 2026 · callboardhq.com
Integrations
The documentation lists an Accelevents CSV export, optional API push, an Airtable mirror, and signed webhooks with optional Svix delivery.Read 9 Oct 2026 · docs.callboardhq.com
Security
The documentation says uploads are proxied through the Worker so ownership checks apply on read and write paths, and secrets are supplied through Wrangler rather than stored in the repository.Read 4 Oct 2026 · github.com
License
The project is open source under the MIT license.Read 4 Oct 2026 · callboardhq.com
Agenda
The agenda supports scheduling by room and time and identifies room or session conflicts.Read 9 Oct 2026 · callboardhq.com
AI triage
AI abstract triage provides an advisory score and recommendation but cannot write committee reviews or change submission status.Read 9 Oct 2026 · docs.callboardhq.com
API access
API keys have six independently grantable scopes, four read and two write, and scopes do not cascade.Read 4 Oct 2026 · docs.callboardhq.com
CFP forms
Its proposal forms support conditional questions, character limits, participant rules, close dates, and routing proposals to tracks.Read 9 Oct 2026 · callboardhq.com
Demo email limitation
The demo routes email to its console mail driver, so it does not send messages to speakers.Read 9 Oct 2026 · callboardhq.com
Demo limitation
The demo prints emails to its console instead of sending them to recipients.Read 4 Oct 2026 · callboardhq.com
Hosting
The documented self-hosted setup uses one Cloudflare Worker, a D1 database, and an R2 bucket; the site says no other service is required to run the workflow.Read 9 Oct 2026 · callboardhq.com
Not available
The site says self-serve organizations and per-organization tenancy are not built yet; organizations are provisioned by the deployment operator and organizer rights are deployment-wide.Read 9 Oct 2026 · callboardhq.com
Open source
Callboard is open source under the MIT license and can be self-hosted.Read 9 Oct 2026 · callboardhq.com
Publishing
Published schedules include ordered speaker and co-speaker names and can feed calendar invites, CSV exports and an API.Read 4 Oct 2026 · callboardhq.com
Publishing and exports
Published schedules can be embedded, and programme data can be exported as calendar invites or CSV and accessed through an API with per-event scoped keys.Read 9 Oct 2026 · callboardhq.com
Review
Reviewers get assigned-only workspaces, weighted scoring across two rounds, and organizers can see aggregate scores and outstanding reviews.Read 9 Oct 2026 · callboardhq.com
Speaker portal
Accepted speakers can edit session details, upload headshots and materials, complete tasks, and access event resources through a portal.Read 9 Oct 2026 · callboardhq.com

Plans and prices

Self-hosted Free Open source · MIT · Self-hosted Read 9 Oct 2026 · callboardhq.com

Every Callboard plan and price →

Strong points and limits

Strong points

  • Conditional CFP forms can route proposals to tracks.
  • Weighted scoring supports two review rounds.
  • Speaker portal handles session updates, materials and tasks.
  • Published schedules support embeds, exports and API access.
  • Six API scopes are independently grantable.

Limits

  • Public self-serve signup is not built yet.
  • Per-organization tenancy is not built yet.
  • The demo routes email to its console instead of recipients.
  • Organizations must be provisioned by the deployment operator.

Who it suits

Callboard suits event organizers who need a self-hosted workflow for CFP submissions, reviews, speaker coordination and agenda publishing. Its event workflow also serves reviewers and accepted speakers through assigned proposals and a dedicated portal.

Verdict

Callboard covers the event workflow from proposals and reviews through speaker onboarding and publishing, with self-hosting and an MIT license. Organizations should account for operator-provisioned access and the demo's non-delivery of email.

Where Specifiction places it

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