As in title, preferably open-source, but doesn’t have to, I will start:
KOReader - Amazing reader app, and being able to use the same app across various devices, even non-android ones, is pure bliss. Japanese support is pretty good too, which makes me happy. Though… Sadly no vertical text support :c
Syncthing-fork - Being able to keep a library of books, and some files, and easily keep the shared folder across various devices, is mega comfy. Tachiyomi - Cute manga reader.
NewPipe - Really pleasant youtube client, that i sometimes use to listen to things in the background.
Kaku - An useful Japanese OCR app, that works… quite decently for when I encounter kanji that I do not recognize, and is not text.
EinkBro - A web browser, that on e-ink devices, is quite comfy. Has few… quirks, but works well on e-ink
Moshidon for a Mastodon client
Droid-ify as a much better fdroid client
Another Notes to plan world domination
InnerTune as a great YouTube music ripping app
Feeder for RSS feeds
Xtra as a Twitch client
Tutanota for email/contacts/calendar
Fennec (or Mull) for a demozilla’d stable Firefox with all tracking/analytics/proprietary stuff removed
Mostly stock AOSP apps from my custom GrapheneOS rom.
Every one of those apps are on fdroid, except the built in stock apps obviously
- Florisboard - FOSS keyboard with support for glide typing
- KISS Launcher - Lightweight, search based, customizable launcher. Also
- MuPDF - PDF viewer
- Logseq - Notes. TODO list. Ideas
- Syncthing - For syncing across devices
- Newpipe - Youtube clilent
- K-9 mail - For email
- Feeder - RSS feeds
- Tusky - Fediverse
- Mull browser
- Brave browser
- Organic Maps - For maps and navigation.
- GMaps WV - For maps and navigation.
- Auxio - music player
- Bitwarden
- Termux
- Mega-android - Cloud storage
And ofcourse, F-Droid with additional repos (IzzyOnDroid, Newpipe etc.)
NetGuard Pro - Allows you to see and control traffic from all apps, so you can prevent data flows to 3rd party hosts like the ones from Google or Facebook. The pro edition is paid and necessary, but it’s all open source, just not gratis
Aegis Authenticator - open source 2FA authenticator
LibreTube - alternative, privacy-respecting, open source YouTube frontend using the Piped API
- microG
- Liftoff
- Jerboa
- Infinity
- AuroraStore
- NewPipe
- Tachiyomi
- Binary Eye
- Currencies
- Unit Converter
- K-9 Mail
- Etar
- DAVx5
- OsmAnd
- PersonalDNSfilter
- DNSCrypt
- KDE Connect
- OpenBoard
- NeoBackup
- App Manager
- Aegis
- ImagePipe
- Insular
- VLC
+1 for Tachiyomi.
Merlin - It’s a birding app and can identify birds by picture or by their song.
If you absolutely must get something from Google Play, I suggest Aurora Store, which acts as an alternative frontend for Google Play, so you don’t have to have GApps installed.
If you have use for command line programs, Termux, a terminal emulator, is a great option, and it also works with root.
For reading eBooks, I also have a recommendation, Librera Reader (but I’ll check the OP’s recommendation too).
Material Files and Simple File Manager are great file browsing tools. But if you need a file browser for root specifically, I recommend Material Files specifically.
AR Drawing - for learning painting
StreetComplete. It’s an easy way to improve openstreetmap wherever you are. https://f-droid.org/en/packages/de.westnordost.streetcomplete/
YouTube ReVanced - YouTube with adblocking, SponsorBlock, and Return YouTube Dislike built-in. There is also ReVanced for YT Music.
NetGuard - Firewall that doesn’t need root. Works on system apps too so you can help curb the amount of spying done by system apps and apps that don’t need an internet connection to function.
Connect - Most functional Lemmy app I could find (and I literally tried them all). Still not as smooth of an experience as Relay, but /u/DBrady has announced no plans to port it to Lemmy so Connect will have to do.
Stremio - Any show or movie you want from any streaming platform (Netflix, Hulu/D+, HBO, Apple TV, etc.), all in one place. The app runs on TVs too. Requires plugins to work, but costs as little as $3/mo or even free, depending on what plugins you use. You’ll never need to subscribe to any other streaming platform.
Splitwise - Easily split bills with your SO/roommate(s). Stop arguing over expenses.
Google Rewards - Answer surveys, get Google Play credit. Paid apps are now free!
Some I haven’t seen listed yet:
- fbreader My favorite ebook reader.
- TrackerControl Blocks Ads and Trackers
- AntennaPod Podcast App
- AudioBookShelf I’ve actually switched back to the website since the App seems broken
- Nextcloud Deck kanban board
- Nova Launcher Alternate Home screen
I stopped using Nova Launcher when it was aquired by an analytics company, since launchers usually have access to a lot of permissions, and I don’t trust a company dealing in analytics to operate in good faith with that access. I have used Lawnchair 2 and recently switched over to Neo Launcher.
Good to know!
Listing only things that haven’t been listed
- Seal: video downloader that lives in the “share” menu
- Aegis: TOTP/Google Authenticator clone that’s open source
- personalDNSfilter: an in device vpn that lets you block websites (mostly ads) (blocks in app ads too for quite a few apps!)