Run the whole conference from one platform
Registration, schedules, calls for proposals, juried contests, surveys, and a print-ready program booklet — modular, under your brand, priced for the organizations that run one great event a year.
Registration, schedules, calls for proposals, juried contests, surveys, and a print-ready program booklet — modular, under your brand, priced for the organizations that run one great event a year.
A writers conference today runs registration, a call for proposals, a contest platform and a survey tool that have never met each other. Four logins, four exports, four bills — and no shared attendee identity between any of them.
Turn on what this year's event actually needs. Everything shares one roster, one brand and one bill — and every module is gated by plan, not by a sales call.
Ticket tiers with early-bird windows, packages, add-ons, coupons, agreements, per-session seats, and live reservation holds. Prices are recomputed server-side; the client never sets a total.
Buy ten seats in one order and hand each one to a real person. Every recipient gets a claim link, signs their own waivers and picks their own sessions. You track who's claimed.
Timeslot builder with per-session capacity, presenter assignment, attendee session registration through the same inventory ledger, and printable personal itineraries.
Public submission forms, co-presenters, jury star ratings, accept and decline with notification previews, confirmation tracking, and one-click conversion of an accepted proposal into a scheduled session.
The front desk on a phone: fast search, one-tap check-in, claim a gifted ticket on the spot, live counters, and messaging that tolerates the venue's terrible wifi.
A configurable multi-stage judging engine: your own entry fields, caps per stage, blind jury scales, entrant Q&A, advance and rollback, and public award pages with social cards.
Nine question types, a builder that previews as the attendee sees it, responses gated to people who actually checked in, per-question charts and a board-ready report.
The printed program, generated from your schedule in your own type and colors. Choose the cover, welcome letter, sessions, award pages, sponsors and committee, then send it to the printer.
Not feature-list padding — these are the gaps we found when we mapped eleven registration, CFP and judging platforms against the jobs a conference actually has.
Every conference prints a program, and every platform makes you rebuild it by hand in a page-layout app. Posium generates a print-ready booklet from the schedule you already built, styled in your brand's fonts and colors.
Nobody else ships this. The best competitors offer a PDF schedule export.
Multi-stage judging — shortlists, blind rounds, finalists, a locked winner — exists in exactly two serious platforms, both standalone, both starting around seven thousand dollars a year.
On Posium it rides along with the conference your entrants are already attending.
An assistant registers her boss. A parent buys for a teen. A sponsor buys a block of ten. Most platforms make the purchaser the attendee and leave you fixing it by email for a month.
Posium splits the money from the person: one order, many claim links, each holder signing their own agreements.
Every organization gets its own themed site at yourorg.posium.events, or your own domain. One theme record drives the web pages, the emails and the printed booklet — so the program on the chair matches the site that sold the ticket.
One event page, one codebase, three saved themes — each also rendering in light and dark. A theme is a validated data record, not a fork: every palette is checked for contrast before it can ship, and the same record styles the emails and the printed booklet.
Annual plans, because conferences are seasonal and monthly billing fits nobody who runs one. Per-ticket fees are published, capped, and refunded in full when you refund a ticket.
Add-on · Branded Site — $290/yr puts your own domain and white labelling on any plan, so you never have to buy a volume tier to get your name in the address bar.
A $200 ticket on Pro, with fees passed through to the attendee — the default. You can absorb them instead, per event.
The columns are the jobs a writers conference actually has. We checked eleven platforms; nobody covers the row.
| Platform | Session-level registration | CFP + review | Multi-stage judging | Surveys | Print program | Typical cost |
|---|---|---|---|---|---|---|
| Posium Pro | ✓ | ✓ | ✓ | ✓ | ✓ | $990/yr + capped fees |
| Eventbrite | ◐ | ✗ | ✗ | ◐ | ✗ | ~$1,840/yr in fees |
| RegFox | ✓ | ✗ | ✗ | ◐ | ✗ | ~$600/yr in fees |
| Sched | ✓ | ◐ | ✗ | ◐ | ◐ | $600–3,900/yr |
| Whova | ✓ | ✓ | ◐ | ✓ | ◐ | $2,500+/event, quote only |
| Sessionize | ✗ | ✓ | ◐ | ◐ | ✗ | $499/event, CFP only |
| Submittable | ✗ | ✓ | ✓ | ◐ | ✗ | ~$10,000/yr |
| OpenWater | ◐ | ✓ | ✓ | ◐ | ✗ | ~$6,900+/yr |
✓ full · ◐ partial or paid add-on · ✗ absent. Costs model the reference customer: a 200-attendee conference at $200 a ticket, using publicly reported pricing as of July 2026. Several of these vendors are quote-only, so their figures are ranges reported by buyers, not quotes to us.
“Organizations own their attendee relationships. We never market to them.”A promise, not a setting — along with: your Stripe account, your money, your data, and an export button that always works.
We're taking a small number of founding conferences through launch — with our help on setup and migration, and pricing that doesn't move on you afterwards. Tell us where to reach you.
One email when we open early access. No newsletter, no sharing your address — the same promise we make about your attendees.