
Greenroom
Greenroom is an open-source, self-hostable backstage workspace for managing a conference program from the call for speakers through event day.
What Greenroom is
Greenroom is an open-source, self-hostable backstage workspace for managing a conference program from the call for speakers through event day. Its form builder supports custom fields, conditional logic, tracks, close dates and submission limits. Review tools include blind review, weighted scorecards, reviewer assignment by track and recusal. Speakers can follow submission status, update bios and headshots, and complete onboarding tasks. Organizers can build agendas by dragging sessions across rooms and days, with automatic conflict detection. The workspace also supports confirmation and decision emails, feedback, reminders and .ics calendar invites. A speaker CRM provides an organization-wide database, sourcing pipeline, segments, merge tools and bulk outreach. Greenroom offers a one-way Airtable sync, a REST API, signed webhooks and brandable website widgets. API tokens are limited to one event, and documented endpoints cover sessions, submissions and speaker profiles. The site says Greenroom runs on Cloudflare, but also says it is localhost-only, has no authentication and must never be exposed to a network.
Good
- Customizable call-for-speakers forms.
- Blind review and weighted scorecards.
- Automatic agenda conflict detection.
- Speaker portal for status and onboarding tasks.
- REST API, signed webhooks and brandable embeds.
Watch out
- No authentication, according to the site.
- Must never be exposed to a network.
- Airtable sync is one-way.
- API tokens are scoped to one event.
Who it suits
Greenroom suits conference organizers seeking a workspace for speaker submissions, reviews and scheduling, with a portal for speakers. Its self-hosting and API options may also suit teams that want to manage event data themselves.
Verdict
Greenroom covers the conference-program workflow from submissions through scheduling and speaker communication. Its localhost-only security constraint is critical: the site says it must not be exposed to a network.
The facts
Each one read from Greenroom's own pages, with the date it was checked.
What it does
- Agenda
- The agenda builder supports drag-and-drop scheduling across rooms and days with automatic conflict detection.checked 4 Oct 2026
- Airtable
- An Airtable mirror provides one-way sync to a browsable copy of the team's Airtable base.checked 4 Oct 2026
- API and embeds
- The product page lists a REST API, signed webhooks, and brandable widgets for embedding on websites.checked 3 Oct 2026
- API and webhooks
- Greenroom offers a REST API, signed webhooks, and brandable embeds; its API reference documents event-scoped bearer tokens and submission event webhooks.checked 4 Oct 2026
- API scope
- API tokens are scoped to one event, and documented endpoints provide access to sessions, submissions, and speaker profiles.checked 3 Oct 2026
- Audience
- Greenroom says organizers get an event workspace and speakers get a portal to submit and track talks.checked 3 Oct 2026
- CFP forms
- Its call-for-speakers form builder supports custom fields, conditional logic, tracks, close dates, and submission limits.checked 4 Oct 2026
- Communications
- Speaker communications include confirmation and decision emails, feedback, reminders, and .ics calendar invites.checked 4 Oct 2026
- Hosting
- The site describes Greenroom as self-hostable and says it runs on Cloudflare.checked 4 Oct 2026
- Integration
- Greenroom provides a one-way Airtable sync that keeps a browsable copy of event data in the team's Airtable base.checked 3 Oct 2026
- Pricing
- The homepage describes the product as open source and says it is intended to avoid an enterprise SaaS bill; it does not state a price.checked 4 Oct 2026
- Purpose
- Greenroom is an open-source, self-hostable tool for managing a conference program from call for speakers through agenda publication.checked 4 Oct 2026
- Review
- Review workflows support reviewer routing, blind review, weighted scorecards, and recusal.checked 4 Oct 2026
- Scheduling
- The agenda builder supports drag-and-drop scheduling across rooms and days, with automatic conflict detection.checked 3 Oct 2026
- Security
- The site says Greenroom is localhost-only, binds to 127.0.0.1, has no authentication, and must never be exposed to a network.checked 4 Oct 2026
- Self-hosting
- The homepage describes Greenroom as open source and self-hostable.checked 3 Oct 2026
- Speaker CRM
- The speaker CRM includes an organization-wide database with a sourcing pipeline, segments, merge tools, and bulk outreach.checked 4 Oct 2026
- Speaker portal
- Speakers can track submission status, update bios and headshots, and complete onboarding tasks.checked 4 Oct 2026
The company
- Maker
- The linked project repository credits Zak El Fassi under its MIT license notice.checked 4 Oct 2026
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