Here is a list of 20 open-source and free video appointment and scheduling CMS software that can be used for various purposes, including healthcare, education, and business appointments:

1. BigBlueButton

• Overview: Open-source web conferencing system primarily designed for online learning, but it includes scheduling and video appointment capabilities.
• Features: Video conferencing, screen sharing, integrated chat, recording.
• Website: BigBlueButton

2. Jitsi Meet

• Overview: Fully open-source video conferencing platform, with options to integrate appointment scheduling.
• Features: Secure video calls, no account required, API integrations for scheduling.
• Website: Jitsi

3. Nextcloud Talk

• Overview: Part of the Nextcloud collaboration platform, Talk allows secure video appointments and can integrate with scheduling systems.
• Features: Video calls, secure communication, document sharing, calendar integration.
• Website: Nextcloud Talk

4. Rocket.Chat

• Overview: Open-source chat and video communication platform that includes options for setting up appointments and integrations with scheduling software.
• Features: Video conferencing, integrations with calendars, secure messaging.
• Website: Rocket.Chat

5. Easy!Appointments

• Overview: Free open-source appointment scheduling system that can integrate with third-party video conferencing tools.
• Features: Calendar scheduling, customer management, staff management, Google Calendar integration.
• Website: Easy!Appointments

6. Calendly (Open-Source Alternatives: Calendso, Koalendar)

• Overview: While Calendly itself is not open source, there are open-source alternatives like Calendso and Koalendar for scheduling.
• Features: Scheduling, integration with video conferencing tools like Zoom, Google Meet, Jitsi.
• Website: Calendso, Koalendar

7. Simple Calendar

• Overview: An open-source scheduling plugin for WordPress that supports event and appointment scheduling.
• Features: Google Calendar integration, event scheduling, and reminders.
• Website: Simple Calendar

8. FullCalendar

• Overview: Open-source, fully customizable JavaScript calendar that can be used for scheduling appointments and integrating video conferencing.
• Features: Calendar views, event scheduling, customization, integration options.
• Website: FullCalendar

9. Zammad

• Overview: Zammad is an open-source helpdesk and customer support software with scheduling capabilities for customer appointments, which can be integrated with video conferencing tools.
• Features: Ticketing, scheduling, integration with video conferencing tools.
• Website: Zammad

10. Koha

• Overview: An open-source library management system with scheduling features for events and appointments that could be adapted for video appointments.
• Features: Calendar-based scheduling, integration with other communication tools.
• Website: Koha

11. OpenEMR

• Overview: An open-source electronic medical record (EMR) and practice management software that includes appointment scheduling with potential video integration.
• Features: Appointment management, patient records, integration with telemedicine tools.
• Website: OpenEMR

12. Chime (Amazon Chime SDK)

• Overview: Open SDK for video conferencing that can be integrated into custom-built scheduling systems for video appointments.
• Features: Video conferencing, screen sharing, customizable integrations.
• Website: Amazon Chime SDK

13. BookStack

• Overview: A free, open-source CMS that allows users to set up an online booking system for meetings, which can be integrated with video appointment tools.
• Features: Wiki-based content management, team scheduling, collaboration.
• Website: BookStack

14. Doodle (Open-Source Alternatives: Rallly)

• Overview: Doodle itself isn’t open-source, but Rallly is an open-source alternative that allows group scheduling and appointments.
• Features: Group scheduling, appointment setting.
• Website: Rallly

15. Vtenext

• Overview: Open-source CRM that supports video conferencing, event scheduling, and appointment setting with customers or clients.
• Features: CRM integration, scheduling, video appointments, email notifications.
• Website: Vtenext

16. Koalendar

• Overview: Open-source scheduling platform similar to Calendly, offering integrations with video conferencing tools.
• Features: Schedule management, video conferencing integration.
• Website: Koalendar

17. Booked Scheduler

• Overview: An open-source booking system for managing appointments and schedules, which can be customized to integrate with video conferencing.
• Features: Appointment booking, calendar integration, customizable workflows.
• Website: Booked Scheduler

18. Sagenda

• Overview: Free appointment scheduling software that integrates with video conferencing tools for meetings and appointments.
• Features: Online booking, Google Calendar integration, video conferencing support.
• Website: Sagenda

19. OpenDocMan

• Overview: OpenDocMan is an open-source document management system, but it includes scheduling tools that can be adapted for video appointments.
• Features: Document management, appointment scheduling, secure communication.
• Website: OpenDocMan

20. Meet.coop

• Overview: Open-source video conferencing platform that supports online meetings and can be used for appointments and scheduling with integration to other scheduling tools.
• Features: Video conferencing, secure meetings, screen sharing, integrations.
• Website: Meet.coop