I find it more and more complicated to quickly share images or files directly between my multiple devices and operating systems over the network.
This list of OSS projects are here to help you find the right solution for you.
Localsend
Share files to nearby devices. Free, open-source, cross-platform.
Copyparty
https://github.com/9001/copyparty
Portable file server with accelerated resumable uploads, dedup, WebDAV, FTP, TFTP, zeroconf, media indexer, thumbnails++ all in one file, no deps
Pairdrop
PairDrop: Browser peer-to-peer Transfer Files Cross-Platform. No Setup, No Signup.
Tailscale Taildrop
https://tailscale.com/kb/1106/taildrop
If you use tailscale, enable File Sharing in settings and easily send files across devices.
Croc
https://github.com/schollz/croc
CLI tool to send files over internet just by using simple password. Multiplatform with unofficial Android app