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