https://fmhy.net/file-tools#p2p-file-transfer
https://schollz.com/tinker/croc6/ - get files

https://retroshare.cc/

https://webwormhole.io/#
https://wormhole.app/ Fastest File Transfers, End-to-End Encrypted

https://dropmefiles.com/ link and pass

https://drop.lol/ Share Files Between Devices on the Same Network
https://dropall.stream/ P2P File Sharing Over Browsers, No Size Limits
https://www.sendbig.com/ Transfer Large Files (Upto 30GB) for Free, and Resume Uploads
https://transferkit.io/ Decentralized File Transfer Made Easy for Common Users
https://sendfileonline.com/ Share Files Only With a 6-Digit Code

https://instant.io/

https://share-text.com/#!
https://sendfiles.dev/ https://upload.disroot.org/ with password
https://www.sharedrop.io/
https://datash.co/ for test

remote storage - https://rclone.org/
syncthing - https://linuxconfig.org/how-to-keep-files-and-directories-synchronized-across-different-devices-using-syncthing-on-linux
syncing - https://www.resilio.com/blog/linux-file-sync

https://github.com/aria2/aria2/issues/663 how to share
https://github.com/casey/intermodal?tab=readme-ov-file#pre-built-binaries

\On a server:
 
cargo install -f imdl
imdl torrent create --input foobar
imdl torrent show --input foobar.torrent
imdl torrent verify --input foobar.torrent --content foobar
imdl torrent link --input foobar.torrent
# copy the magnet link printed!
 
aria2c --seed-ratio=0.0 --check-integrity foobar.torrent
 
aria2c --check-integrity '-paste-magnet-link-here-'
BTW, if the file is available also on some (LAN) HTTP URL, then it is possible to combine the magnet and HTTP downloads into a “foobar.metalink”
 
<?xml version="1.0" encoding="UTF-8"?>
<metalink xmlns="urn:ietf:params:xml:ns:metalink">
  <file name="foobar">
    <size>123</size>
    <hash type="sha-256">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</hash>
    <!-- priority: “Lower values indicate a higher priority” -->
    <metaurl mediatype="torrent" priority="1">magnet:?xt=urn:btih:...&amp;dn=foobar</metaurl>
    <metaurl mediatype="torrent" priority="2">https://.../foobar.torrent</metaurl>
    <url priority="3">https://.../foobar</url>
  </file>
</metalink>
 
aria2c --check-integrity --metalink-file=foobar.metalink