Claper
The ultimate tool to interact with your audience (alternative to Slido, AhaSlides and Mentimeter).
Maintained, but at a slower pace than the leaders in its category.
Commit activity more than 28% of tracked projects; popularity more than 31%. How this is calculated.
Commits, last 11 months
| Stars | 806 |
|---|---|
| Latest release | v3.0.0 · 6 Aug 2026 |
| Repo updated | 11 Sept 2026 |
| Licence | GPL-3.0 |
| Built with | Elixir, Docker |
Is Claper actively maintained?
Claper is under active development: 92 commits landed over the last 11 months, averaging roughly 19 commits a month in the most recent quarter.
Activity is accelerating: the last quarter carried 300% more commits than the one before it.
The most recent tagged release, v3.0.0, shipped about two months ago — a current, installable version exists today.
Claper ranks #11 of 21 in Polls and Events, placing it mid-table for maintenance activity.
What Claper actually does
Claper is an interactive presentation tool designed to collect live feedback, questions, and reactions from an audience during events. It functions as an open-source alternative to proprietary engagement platforms like Slido and Mentimeter. You can run it on your own hardware to host live polling sessions.
Best fit: It suits event organisers, educators, and presenters who require a self-hosted audience engagement tool under a GPL-3.0 licence.
Worth knowing: The project has a moderate maintenance score and competes in a niche space with well-established proprietary tools, which may limit community resources and third-party integrations.
Deployment notes
As it is packaged with Docker, you will typically need to configure persistent storage for application data and sit it behind a reverse proxy to handle TLS termination.
Links
Alternatives to Claper
Projects in the same categories, ordered by health score.
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Open platform to collect and prioritize feedback (alternative to UserVoice).
Feature-rich web-based polling software. Supports extensive survey logic.
Community-feedback tool for managing incoming feedback and prioritizing a public roadmap (alternative to Canny, UserVoice, Upvoty).