Calendar Import-Export
Import, Export & Backup your calendars using ics filesGPL-3.0-only
ICSx⁵
Subscribe to Webcal (.ics) calendarsGPL-3.0-only
Etar - OpenSource Calendar
Etar is a material designed open source calendar, for everyone!GPL-3.0-only
DanXi
Maybe the best all-rounded service app for Fudan University students.GPL-3.0-only
CalEF (Calendar Entry Formatter)
Create and send Appointment-Confirmation-Message from Android-Calendar-Entry.GPL-3.0-or-later
Hypezig
Offline-compatible browser for cultural events in LeipzigGPL-3.0-or-later
Kolab Client
Sync contacts/calendarGPL-3.0-only
Lampshade
TV tropes wrapperMIT
Identiconizer!
Identicons for your contactsApache-2.0
OpenConnect
SSL VPN client for Cisco AnyConnectGPL-2.0-or-later
DSub
Play music across the networkGPL-3.0-only
jtx Board journals|notes|tasks
Keep track of journals, notes & tasks - iCalendar compliant and syncable with yoGPL-3.0-only