Kde connect works good, but https://pairdrop.net/ may be helpful.

KDE connect works great with Linux. You can easily put stuff on and get stuff off your phone.

Syncthing or Resilio Sync for regular, instant, no-fuss between devices you control.

I use Syncthing-Fork in my phone (has more flexible sybc conditions) to keep specific folders in sync.

I use Resilio Sync on my file server just for the Selective Sync feature, which enables me to easily grab any file from the server from anywhere.

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I use Syncthing for this; it syncs directories on my phone and computer, so to put something on my computer from my phone I just put it in that directory. I share my camera roll so my pictures are synced with my computer.

If you just want a “send this file” application, warpinator might do that.

I use Signal’s “note to self” conversation. Since you can install the desktop version of Signal on basically any OS, it is almost perfectly cross-platform.

File share on a NAS and “save to files” under the share menu on iOS. Also the venerable “send yourself an email” if the file is small enough

Localsend!!

i usually get some hate for this, but i have a samba share on my desktop, which i can access from home network. i use a wake on lan app to wake up the desktop when i need to access the share

I use sftp with either termux on android or ish on ios, alternatively telegram or email.

Edit: I don’t use it, but if I’m not mistaken, nobody mentioned any cloud service.

And before I discovered ish, I used the python html module to start an html server and connected with safary. You shouldn’t do this when your connected to the wild, open internet - it opens up the device on which your server runs for everybody unless you invest the work to secure the html server, taking a 1min research 1 line task into real work.

SMB storage mounted by file manager

There are already mentions of LocalSend (i use it for smaller stuff), Syncthing (for keeping folders synchronized, i use it to keep Wine prefixes between my Pc and my Steam Deck up to date) and KdeConnect (I use it for Clipboard sharing); I also use Copyparty, which runs on everything that allows python to run (so pretty much everything) and handles everything from single files to folders, up- and download, drag&drop support, serving mediafiles and so on, with lots and lots of features. give it a try!

@ThisIsAManWhoKnowsHowToGling https://pairdrop.net/ - like snapdrop before it enshittified

https://localsend.org/

Syncthing!