Evercontact - Your contacts always up to date and automatically with Evercontact.
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
Find My - Find My can help you locate your devices and your friends and family.
Pobuca Connect - Connect with your contacts.
PhoneTrack - Nextcloud app to create tracking sessions to display phones position in real time and export activity to gpx.