It’s worth noting that KDE Connect works on more desktops than just KDE Plasma. It also supports Linux, Android, iOS, Windows, MacOS, and probably other operating systems, and can do more than just transfer files.
Local Send is all you need.
Good options. Croc is also useful for remote send to a random person. Pick your target file, it generates a three word code for the relay, end receiver types in three word code, the relay matches you up for a peer to peer transmission.
For your personal use KDE Connetc might be best. But for “hey can you send me this” https://pairdrop.net/ is just magic. 0 setup and works on all devices with a browser.
Out of the options they provided, I haven’t used packet or gsconnect, but the others I have had many problems with. I’m convinced my ISP absolutely hates these programs because I’ve pretty much never had any luck with using them to send stuff to and from my phone.
Hell, I consider it a miracle that I can even connect my laptop and desktop using Synchthing. Though that’s the one I have had the most success with in the past, so I’m not that surprised.
Don’t know about the others, but KDE connect has absolutely nothing to do with your ISP. It’s using WiFi for wlan, not to connect to the internet.
I suspect you may need to allow local ports on your machine for some of these to function as expected.
Probably. I’m not an expert in this type of stuff, but I’ll definitely look into that.