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Mentimeter vs Claper: catalog facts
Mentimeter	Claper
Freemium Free to start creating presentations, with paid plans available.	Free Open source under AGPL-3.0 and free to self-host.
Web	Web, Self-hosted
Participants join with a code from any device Results shown live on screen	Live polls and audience questions during a talk Participants join from their own devices
Needs an internet connection during sessions Presenters need an account	Self-hosting requires running an Elixir application Research does not detail hosted plans or pricing
Web application	Self-hosted
Closed source	Open source
License not stated	License: AGPL-3.0
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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