CalDAVSyncAdapter

F-Droid builds:

• https://f-droid.org/repository/browse/?fdid=org.gege.caldavsyncadapter

Website:

• https://github.com/gggard/AndroidCaldavSyncAdapater

Main developer 'gggard', source checkout:

git clone https://github.com/gggard/AndroidCaldavSyncAdapater.git

Source checkout the fork of timoberger, this fork has two-way sync and is working for SOGo now:

git clone https://github.com/timoberger/AndroidCaldavSyncAdapater