Google Calendar Alternatives for Linux
Google Calendar is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The most popular Linux alternative is 
Calendar Lock PEA, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Google Calendar and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Google Calendar are 
Lightning Calendar (Free, Open Source), 
Rainlendar (Freemium), 
MineTime (Paid) and 
Kontact (Free, Open Source).
- Password Encrypted Calendar: Calendar Lock PEA
- Displays iCalendars that are plaintext only in RAM, but otherwise always encrypted on the device.- Free • Open Source
- Mac
- Windows
- Linux
- Organize your schedule and events in a calendar fully integrated with Thunderbird or Seamonkey email.
- Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop.
- MineTime is a free, modern and multi-platform calendar application. It connects to several calendar providers (including Google Calendar, Microsoft Exchange and Outlook.com) and provide advanced scheduling features powered by Artificial Intelligence.
- Personal Information Manager (Mail, Contact, Calendar and more).
- Free service that takes care of your contacts, calendars and more so you don't have to.
- Freemium
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Blackberry
- Windows Phone
- iPad
- Blackberry 10
- Sailfish OS
- It provides management of events and tasks, alarm notification, web export, network transparent handling of data, group scheduling, import and export of calendar files and more.
- GNOME Calendar is a simple and beautiful calendar application designed to perfectly fit the GNOME desktop. By reusing the components which the GNOME desktop is build on, Calendar nicely integrates with the GNOME ecosystem.
- Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.No screenshots yet
- Freemium • Open Source
- Linux
- Online
- Self-Hosted
- woelkli is a service that provides secure cloud storage hosted in Switzerland. Save, view, edit and share your files from anywhere in the world, from any device
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
It's a cloud storage service...