Keepass for password storage (I don't trust the built-in password app, yet.
Overland (iOS) or several other apps in Android for phone tracking.
NextScan: scan documents using your phone camera.
Nextcloud Files: this is where you view and upload files to the server, and set up sync for your photos folder.
Desktop: use the Nextcloud Desktop client to designate which folders you want to sync, and the app will keep your desktop directories and those on Nextcloud the same, for as many desktops as you wish.
Web Browser: Just go to your web address.
Here are the ways you interact with Nextcloud, one the server is built and ready to go (see the technical section below for that information). The idea is that this is all do-it-yourself, so few apps come configured you set it up the way you want to use it.
Google Calendar, tasks, keep and the small office apps.
Microsoft teams/Skype voice and video chatting.
Google Drive/Amazon Drive/Microsoft Teams file storage and syncing.
Note: I'll strike out anything which turns out to be deficient in its claim. Nextcloud is a server software suite designed to be a do-it-yourself privately-hosted replacement for. Facebook Twitter Google + LinkedIn Pinterest Email Share.