Wedding Seat, operated by Sigvanta LLC, is an online wedding-planning workspace that brings essential planning tasks together in one shared project. Designed for couples who want a clearer alternative to scattered spreadsheets and notes, it connects guest management, seating, budgeting, checklists, timelines, and a wedding website.

Couples can track invitations, households, plus-ones, RSVP responses, notes, and meal preferences; create ceremony, reception, and backup seating layouts; and monitor costs, payments, categories, and vendor spending. Planning checklists help organize priorities and deadlines, while the website builder lets couples share wedding information, schedules, and RSVP options. Guests can use the website and RSVP experience without creating their own accounts.

Wedding Seat is free to start, with the free plan supporting projects of up to 50 guests. Projects can be shared with a partner, planner, or venue, helping collaborators work from connected information. The platform is designed with multilingual use and varied family structures in mind, and also provides guides, templates, and planning resources to help couples move from initial ideas to an organized wedding plan.