Cal.com
cal.com
Open-source scheduling links you can run on your own server
Free tier
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mural.co
A shared canvas of sticky notes for running a workshop remotely.
Mural is a collaborative whiteboard built around facilitation rather than drawing: timers, private voting, a summon-everyone-to-my-view button, and templates for retros, journey maps and affinity clustering. Cursors are live and named, so a remote workshop behaves a little like a room with a wall in it. The free plan allows unlimited members and unlimited murals, but only three of them can be edited at any one time.
Questions
A genuinely usable free tier with paid plans for volume or team features. Only three murals are editable at a time on the free plan; the rest go read-only until you upgrade.
Yes. Mural sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Only three murals are editable at a time on the free plan; the rest go read-only until you upgrade.
Alternatives
Same category or same task, ordered by how closely they overlap.
cal.com
Open-source scheduling links you can run on your own server
calendly.com
Send a link and let people book a slot your calendar says is free
doodle.com
Propose several times and let a group tick the ones that work for them
easyretro.io
Runs a retro as a board of cards people add, vote on and group
mentimeter.com
Live polls and word clouds that build on screen as people answer
slido.com
Collects audience questions and upvotes them so the best ones rise