Cal.com
cal.com
Open-source scheduling links you can run on your own server
Free tier
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easyretro.io
Runs a retro as a board of cards people add, vote on and group.
EasyRetro, formerly FunRetro, gives each retrospective a board with columns, cards that stay hidden until everyone has written, dot voting and an export at the end. Participants join from a link without registering, which is what makes it workable with contractors and guests. The free plan only produces public boards, so anyone who gets the URL can read what your team said.
Questions
A genuinely usable free tier with paid plans for volume or team features. Free boards are public to anyone with the link — private boards require a paid plan.
Yes. EasyRetro 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.
Free boards are public to anyone with the link — private boards require a paid plan.
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
mentimeter.com
Live polls and word clouds that build on screen as people answer
mural.co
A shared canvas of sticky notes for running a workshop remotely
slido.com
Collects audience questions and upvotes them so the best ones rise