Productivity, you could add Googles Snapseed, works offline. Also Ankidroid. And maybe CollaboraOffice but that has no features.

StirlingPDF is awesome here but needs hosting.

Open Videoeditor maybe.

OSS Document Scanner for scanning stuff.

Streetcomplete to improve OpenStreetmaps!

For navigation, adding NeoStumbler is essential. The app allows you to collect wifi, cell towers and bluetooth beacons with the GPS location. You can upload it to beacondb.net which offers a database you can then download and in the future use offline for network location positioning in GrapheneOS.

For navigation, TTS is essential too. Sherpa onxx is brilliant here, awesome quality, all local.

Wormhole for file transfer P2P over the internet.

YetCalc for a nice calculator with conversion stuff.

ConverterNOW for more conversion stuff.

IMHO Rethink > NetGuard:
Rethink is fully free and supports the same features as NetGuard (DNS and application logging, DNS filtering, etc.) except without a paywall (yes, you can access the locked NetGuard features if you have some programming knowledge). Moreover, Rethink works well in user profiles and can even allow you to connect to a VPN like ProtonVPN (and still use the DNS logging/filtering features)

ianonymous3000 Yes, I have heard a lot of good stuff about it but why need a DNS when the VPN already takes care of it? (at least the ones on my list)

Wouldn't it be redundant? Or what am I missing here?

Because Rethink DNS (despite its name) isn't just a DNS stub resolver. This has been discussed previously: https://discuss.grapheneos.org/d/7930-rethinkdns-needed-on-grapheneos/8

Of course, Rethink DNS + Firewall isn't anywhere close to a must have but it also isn't made redundant by other VPN apps.

    ianonymous3000

    Yes these are not relevant for it's use as an App Feed (i.e. Store, you have no idea what you miss otherwise) or when using it with external repos, or if you dont trust the build system of random app developers, or if you fear they might include malware in their binaries (like with xz) but not in the code (which F-Droid then builds).

    F-Droids builds are also reproducible which is a big benefit

      ianonymous3000 great list, here's my feedback:

      • The developer of Syncthing recently announced that development will no longer be continued. I'd remove it from the list as it will become insecure over time.
      • For music streaming I'd recommend InnerTune over RiMusic as it's nicer to navigate and follows Material Design.
      • For YouTube Clients I'm missing LibreTube as the easiest to navigate frontend experience (I'm personally using GrayJay and Tubular, but my beginner peers prefer LibreTube for its design and ease of use).
      • I'd probably remove Zcash (and consequently Zashi) as it's not a "privacy by default" coin and harder to set up in a private way compared to Monero. It's also far less adopted by private services such as Mullvad.

      That's all. Thanks for your work and research!

          N1b The developer of Syncthing recently announced that development will no longer be continued. I'd remove it from the list as it will become insecure over time.

          Removed Syncthing! Thanks for the info - didn't know that.

          N1b For YouTube Clients I'm missing LibreTube as the easiest to navigate frontend experience

          Added LibreTube!

          Thanks for your contributions!

                Consider adding jmp.chat in the phone number masking section. They have a great service.

                • N1b likes this.