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Claper vs Prezi: catalog facts
Claper	Prezi
Free Open source under AGPL-3.0 and free to self-host.	Freemium Free to start with no credit card required; paid plans add more features.
Web, Self-hosted	Web
Live polls and audience questions during a talk Participants join from their own devices	Audience polls, quizzes and Q&A through a QR code with no app or login AI drafting from a description or an existing deck
Self-hosting requires running an Elixir application Research does not detail hosted plans or pricing	Hosted service that needs an internet connection to present Advanced features sit behind paid plans
Self-hosted	Web application
Open source	Closed source
License: AGPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.