GOOGLE CALENDAR ALTERNATIVE Here are some Google Calendar alternatives: Lightning Calendar is an open source calendar option developed by Mozilla, and it’s compatible with Thunderbird and Seamonkey. Etar, an open source, basic calendar option. Fruux, an open source calendar with good features and support for many operating systems. For those wanting a combined solution for both email and calendar functionality, these providers offer that: Mailfence Kolab Now Posteo.de Mailbox.org Tutanota 63 views04:26
