Appointment scheduling/booking application that aims to be super-simple, and open source!
Cost / License
- Free
- Open Source (MIT)
Platforms
- Linux
- Online
- Self-Hosted

Koalendar is described as 'We have created Koalendar to eliminate the back-and-forth of scheduling meetings' and is a appointment scheduler in the office & productivity category. There are more than 50 alternatives to Koalendar for a variety of platforms, including Web-based, SaaS, Android, iPhone and Android Tablet apps. The best Koalendar alternative is Thunderbird Appointment, which is both free and Open Source. Other great apps like Koalendar are Cal.com, Lunacal, Doodle and Crab Fit.
Appointment scheduling/booking application that aims to be super-simple, and open source!

AI-powered platform automates appointment booking via email, stores data in Germany for full GDPR compliance, supports team scheduling, payments, reminders, integrations with 90+ services, offers instant setup, multi-language support, and enterprise features.


Plan the time to have a meeting or event by co-ordinating availability with all the participants using this fuss-free online tool.








FixAppt is a 100% free online booking and scheduling software that helps services of all types and sizes take and manage appointments easily.


Schedule meetings in an easy way Planist can connect with your google calendar to automatically check availability and help you connect with your best contacts, prospects, and clients.




Free & Smart all-in-one scheduling tool for meetings and customer bookings. From group meetings with poll and.




Online scheduling assistant to coordinate meetings 10x faster with contacts inside and outside your company. Works with all calendars (Google, Office 365, Exchange, iCloud, Yahoo, etc). Works on web, smartphone, desktop, using voice, chat, and email.




SimplyMeet.me is a super simple, clean looking and effective meeting scheduling solution. It can integrate with your Gmail, iCAL, Offfice365 or CalDav calendars, your favorite Video platform, Stripe to accept payments and more.



No back-and-forth emails, no double booking and only a few seconds to schedule an appointment with you. It's idea is simple: you create your calendar, set your availability and then share it with our clients or co-workers, who can easily schedule an appointment.




ScheduleOnce is a meeting and appointment scheduling software that connects to your calendar and helps you save time, increase customer satisfaction and be more competitive. Whether scheduling group meetings or appointments for yourself, or accepting bookings in your enterprise...


