caos

Yes, sorry, I had overlooked that. That’s why I recommended Lufi afterwards.

Oh, over the Internet, not just the local network … then maybe Lufi?

for example this instance: https://upload.disroot.org/

Works well, but not particularly fast with large amounts of data (up to 2GB possible)

KDE-Connect? https://kdeconnect.kde.org/

It works very well for the data exchange between Linux, Android, iOS and Microsoft devices. https://apps.kde.org/kdeconnect/

Of course, it can do a lot more, it’s a bit oversized for just data exchange

I don’t know what options there are for admins. lemmy.ml could (temporarily) defederate the instances from which the spam comes. From all Mastodon instances that have a completely free registration, at the moment spam is distributed through the whole fediverse. Lemmy users can block individual accounts, but I don’t think this is possible with a whole instance.

The first paragraph of a post sent from Mastodon (or Akkoma, Misskey etc.) to a Lemmy community will appear in Lemmy as a headline. The character limit is 200 characters, only if it is longer will it be cut off. The post itself is displayed in full. However, only one image is federated, for example.

“But if any M post mentions that L community, the post will get boosted by the community’s M account, so everybody who follows will get a notification.”

That’s not quite right: The Lemmy community boosts the post to the timeline, but not everyone who follows it from Mastodon (or Friendica, Akkoma etc.) receives a notification. The post then only appears in the timeline. You can set whether you want to receive a notification about new posts/boosts from an account

Then there are these two:

https://android.izzysoft.de/repo/apk/io.github.janbar.osmin

https://f-droid.org/packages/com.junjunguo.pocketmaps/

But I have no experience with them

I don’t know the size, but Organic Maps may be rather small

There is also Fediverse software that has integrated ListenBrainz: Sharkey (Misskey-Fork) has the feature “Federated Backgrounds and Music status - You can add a background to your profile as well as a music status via ListenBrainz, show everyone what music you are currently listening too” https://activitypub.software/TransFem-org/Sharkey/-/blob/develop/README.md?ref_type=heads

That’s a good starter list. However it should be noted that all the Simple apps should be avoided now and instead people should use the forked versions from Fossify.

Yes, that’s right, all the recommendation lists are no longer up to date in this respect. However, until all Fossify apps have been released, the Simple apps from F-Droid can still be used. They have no ads, they are just no longer updated for two months/the time of sale…

Here is a very good collection of Foss apps for Android “40+ Best Open Source Android Apps” by itsfoss.com (almost all available in F-Droid)

If you have the apps from F-Droid, there is no need to rush, I think. The F-Droid-apps are without adds and offline. They no longer receive updates, but they are not apps that need constant updates.

Yes! Ghost Commander is open source and it’s able to transfer via sftp

Maybe this one? https://apt.izzysoft.de/fdroid/index/apk/dev.bartuzen.qbitcontroller

Take a look at Cryptpad Forms or FramaForms.

“Magic Earth” is unfortunately not FOSS, but it is “one of the few navigation apps that do without advertising and tracking.” (mobilsicher.de). It includes also “Crowd Sourced Traffic”.

“Rain” is also available at Izzy’s: https://android.izzysoft.de/repo/apk/com.yoshi.rain

FairEmail is also recommended by many. It has even more functions, but is therefore also a bit more complicated.

for Android: k9-Mail