http://weblogs.mozillazine.org/calendar/

A blog focused on the development and updates of the Mozilla Calendar project.

https://www.youtube.com/channel/UCYyaQsm2HyneP9CsIOdihBw

A YouTube channel by Francesco D’Alessio, covering productivity tips and calendar management.

http://calendarservermigration.blogspot.com/

A blog detailing the migration and management of calendar servers, with technical insights and updates.

http://calendarswamp.blogspot.com/

A blog discussing the challenges and solutions in calendar interoperability and synchronization.