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Cal.com
p/calScheduling infrastructure for absolutely everyone
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Bailey Pumfleet

Cal.com - Scheduling infrastructure for absolutely everyone

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Cal.com (formerly Calendso) is the open source Calendly alternative. Self host it, or have it hosted by us. Integrate it seamlessly into your business with advanced customization and the open API.
Designed to be a joy to use for you and your visitors.

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Bailey Pumfleet
Maker
Me, Peer, and hundreds of others have been looking for a more powerful calendar scheduling solution to replace Calendly. One that is customisable, integrates with anything, is white label and more. So, we decided to create our own. We've had over 500 people sign up on our early access list, and we already have an awesome community around Calendso. We're super happy to be finally launching it! We believe that nothing should stand between connecting humans and scheduling important events. That's why Calendso is open-source and available to everyone, for free. Our mission is to democratise and decentralise calendar scheduling, enabling everyone to be able to use calendar scheduling however they'd like. For instance, booking a COVID vaccine shouldn't happen on a server in another country that somebody else is in control of. That's why Calendso enables you to self-host your calendar scheduling, so that your data belongs to you. This enables government bodies and healthcare organisations to use Calendso for their scheduling needs, as existing SaaS alternatives don't meet the compliance requirements. What email has done to communication, we hope Calendso will do to meetings. We're here to make calendar scheduling work for absolutely everyone.
Eugene Hauptmann
@baileypumfleet amazing! Thanks for making it open source!
Marc Seitz
Super excited about the launch of Calendso by @baileypumfleet! I couldn't hold back and made a video to explore the open source project and how to run it yourself:
I used Railway to spin up a quick development PostgreSQL and definitely will deploy it to Vercel and Railway for production.
Ahmad Awais ⚡
@baileypumfleet This is amazing. Exactly what I have been thinking to build but could never find time. 🚀
Veeresh Devireddy
@baileypumfleet Great initiative, and really needed for country-specific sensitive data requirements.
Bree Hopper
@baileypumfleet Does it support checking availability of multiple users simultaneously? For example, if I want a client to choose a meeting time, but only when all 5 of my team members are available? If not, huge opportunity here for the future. Thanks!
Abram Bailey
I notice there is no support for time zones. https://github.com/calendso/cale...
Paul Arterburn
@abram ya, the app looks fantastic and amazing that it's open-source, but this is a *glaring* miss for a calendar booking app. At no point in the UI does it even show the user what timezone they're selecting times in (and it's not their own unless they're in London, which is what they probably think it is). Makes ya kinda wonder what else was missed, eh?
Bora
@abram Someone already implemented this feature and made a PR couple of hours ago, so will not be a problem anymore.
Peer Richelsen
Maker
@abram @boraoztunc fantastic!
Avi
@abram @boraoztunc @peer_rich that's open source for ya
Bailey Pumfleet
Maker
@abram @boraoztunc @nikolay_karelin The timezones do work properly, the issue is open because we have plans to add further timezone-related features.
Kadir Bacak
I love that you guys made Calendso open source! 🚀 Will dive right in 🤿
Bailey Pumfleet
Maker
@bacakad We believe that open source enables us to make calendar scheduling accessible to everyone, and we've had such good feedback from the open source community on this.
Tom Shwa
Okay, so this is something I am voting for 👍🏻🎉
Sreekanth PM
This is one of the coolest project out there. Was interacting with team in slack and they are amazing people. The best part of calendso is the UI. Sure that people will love this awesom eproduct.
Bailey Pumfleet
Maker
@sreekanth850 Thanks very much Sreekanth! We look forward to continuing our journey with you on Slack.
Sarthak Solanki
Hey kudos for the open-source and the presentation video is really good!
Chris Dietrich
Fantastic to see an open source alternative to the calendar/p2p-scheduling layer. The UI is great as well, but the main magic is being able to do deeper integrations. Can't wait to try it out.
Bailey Pumfleet
Maker
@chrisdietr Absolutely, the ability to add completely custom integrations is one of the core principles of Calendso. We're working hard to build many more off-the-shelf integrations, but if you for instance wanted to add a custom integration with an LMS for instance, Calendso allows you to do that easily.
Johannes
Definitely needed - kudos to Bailey and Peer for the development velocity! Can't wait to see the project unfold 🚀
Bailey Pumfleet
Maker
@jobenjada Thank you very much Johannes, we managed to get this built in about a month and a half, and we have huge plans going forward for the future. 📈
Ivanna Wendel
Cool & useful open-source product! Congrats on the launch!
Bailey Pumfleet
Maker
@ivanna_wendel Thanks Ivanna!
Hunter Carter
Does it support payments via stripe?
Peer Richelsen
Maker
@school_4_ants yes it does!
Hunter Carter
Awesome!! #1 feature for me. I didn’t see it on the landing page - maybe that could be highlighted clearly somewhere
Aleks Bochkov
This is fantastic! Thanks for offering it as an open source solution 🚀
Daryna Radiichuk
Finally I found something as an alternative to Calendly! I would work on the monetisation system more properly though, as now it looks like you are not going to earn good money with the product. Good luck guys.
Bailey Pumfleet
Maker
@daryna_radiichuk We've mainly been focused on just getting this launched and available for everyone as open source. We'll be focusing on our SaaS offering, enterprise support and custom integrations (all monetisation methods) soon.
Jim Engine
Great, I love that it's open source! 🙌🏼
Jim Engine
Ps. I love your mission to connect a billion people by 2031.
Bailey Pumfleet
Maker
@officialexaking We're here to make a positive difference to the world and enable more people to connect through calendar bookings, so we believe that if we can connect a billion people through our bookings by the year 2031, that would be a huge goal for us to achieve.
Asit Joshi
Amazing Opensource project!
Sam
Exactly what I was looking for!
Szczepan Serwatka
Wow, pretty impressive. nice idea with open source! For sure I will contact with you to have a discussion regarding open-source idea.
Bailey Pumfleet
Maker
@szczepan_serwatka Thanks! Feel free to drop us a message at hello@calendso.com or join our Slack (link is on our website footer). We look forward to speaking with you :)
Lisa Onkes
We have been looking for the right calendar scheduling tool for a while…. and tried anything on the market we could find. Calendso is by far the best we have found 🚀! So excited to use it and see it grow! 🔥
Bailey Pumfleet
Maker
@lisaonkes Thanks Lisa, we're super happy to have you in our community!
o_o
!Calendso can connect billions of people around the world with open source running their daily business scheduling events - trusted. You guys @calendso (@baileypumfleet, @peer_rich ) are crazy and it feels amazing being part of that. Love to contribute.
Bailey Pumfleet
Maker
@cognosr Thanks very much for your kind words! Super glad to have you onboard.
Cierra Faler
Congrats!! I like that it's open source
Bailey Pumfleet
Maker
@hung_faler We made it open source because we believe that calendar scheduling should be available to anyone, without cost being a limitation.