Apps I use at least several times a week (often multiple times a day). Leaving out some that I use but where there are likely many good options (e.g. TOTP authenticator apps, alarm clocks, calculators, etc.) and "any color as long as it's black" options like GMail and Youtube.
Apps of particular note that people could easily have missed are at the top of the list. Hope I kept lines short enough.
- TripLog Mileage in plug-to-start mode;
- Bouncer (auto-remove permissions from apps after you close them);
- DroidEdit Pro (multitab text and code editor);
- Join by Joaoapps (Pushbullet alternative);
- Meteogram Pro from cloud3squared (Weather widget);
- SMS Backup+ from Jan Berkel (pushes to GMail with label);
- Nine (multi-account Exchange client);
- Firefox (plus "Dark Background and Light Text 0.6.10" and uBlock Origin);
- Firefox Focus for untrusted links (no default browser set = always prompts);
- Microsoft OneNote, Office Lens and OneDrive;
- PocketCasts;
- Textra (for SMS) and Signal;
- Nova Launcher Prime plus Will Windham's Vintage icon pack;
- Swiftkey keyboard;
- LastPass;
- TimeClock Connect Pro from Spotlight Six;
- Ultimate To-Do List from Custom Solutions, but I recently dropped ToodleDo so this may drop away.
Apps of particular note that people could easily have missed are at the top of the list. Hope I kept lines short enough.
And for frivolity, Pokemon Go and Calcy IV.