SeatSolver
SeatSolver is a free seating chart maker for weddings, events and classrooms that works from the guest list you already have. Drop in an .xlsx or .csv, or paste from Google Sheets, with your own column names, plus-ones and a "do not seat with" column. It shows which column it read as what, so you can check its reading before anything is solved. Name the pairs who must or cannot sit together and get a table plan that holds every rule; couples and households are placed as blocks. When guests drop out after you printed place cards, it re-solves while keeping the rest of the room almost as it was, and names who moved. Export a seating chart, place cards, escort list, table signs and a floor plan as PDF, plus CSV. No account, no guest limit, and your list never leaves your browser.
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Alternatives to SeatSolver
All Event software tools
unscene
unscene helps friends decide what to watch and plan movie night together. Start a room, invite your group and answer movie and TV cards privately. Compare shared choices, pick a date and make a plan. You can also use the solo quiz to find your next watch. A free account is available; optional subscriptions and room add-ons provide more planning time and capacity. unscene helps you plan what to watch; it does not stream movies or TV.
sellphotos.online
sellphotos.online is an online store for event photographers, schools, colleges and sports clubs. Upload a shoot and the previews get your watermark. Share one link or QR code, and each guest takes a selfie to find only the photos they're in. Buyers pay you directly, by UPI, bank transfer or however you already get paid, and send a payment screenshot. You approve the order and they download the full-size originals. No commission, no payout fees, no app for guests. Yearly plans from $99.