Deputy might be a bit more popular than Joan. We know about 2 links to it since March 2021 and only 2 links to Joan. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Https://getjoan.com/ provides the hardware and software to manage conference rooms, desks, and any other space. The units use e-ink and last months on a single charge. It integrates with all major email/calendar systems. Source: almost 2 years ago
FWIW, there are companies already doing this: https://getjoan.com/. - Source: Hacker News / over 2 years ago
A quick search yielded https://wheniwork.com/l/employee-scheduling and https://deputy.com. Not self hosted but seem like they would fit your needs. The latter might cost but I guess you can reach out to them for non-profit discounts perhaps. Source: over 1 year ago
Use deputy.com and switch to all breaks are unpaid. Clock off for any break longer than short toilet break. Source: over 2 years ago
Teem - Cloud-based meeting room booking system
When I Work - When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.
Skedda - Offices, co-working spaces, universities, sports venues, studios & churches are just some of the places that manage the use of their desks, rooms, courts, studios, halls and all other 'spaces' with Skedda
ResourceGuru - The fast, simple way to schedule people, equipment, and other resources online.
BOOKMEETINGROOM.COM - Book Meeting Room - Conference & Meeting Rooms Management
Float - The leading resource management software for agencies, studios, and firms. With a simple, drag and drop interface and powerful editing tools, Float saves you time and keeps projects on track.