Linux

KDE Connect is amazing. Also works without KDE.

Either Localsend, if you're only interested in that one function, or KDE Connect for the ultimate experience.

Kde connect is great.

Syncthing

Single file? KDE Connect. A folder? Syncthing

can recommend KDEConnect it's working surprisingly robust.

KDE Connect has been mentioned before. You can supplement this and other tools by using a VPN so that both endpoints can see each other even if the underlying network does not allow this. My preferred solutions are Tailscale (managed, cloud-based) or Headscale (for self-hosting).

I use syncthing all over the place for this sort of thing. I have some sync directories that are multi way synced across multiple devices, others that are one-way drop targets to a specific device, others that are for operations like backing up photos. It's quite excellent with a good sync algorithm that rarely results in conflicts.

KDE Connect is da Bomb

If you want just a replacement for Warpinator, LocalSend is definitely the way to go. I used Warpinator before, and LocalSend is just an overall better version of the same thing imo. Finds other devices instantly, can also send text in addition to files and folders, and is available across platforms.

Personally, I prefer LocalSend to KDEConnect.

KDE Connect

Check out LocalSend. App that let you send things over local WiFi. No server required.

kde connect is my recommendation also

See localsend on github

Alternatively, Material Files (available in F-Droid) can easily create a local FTP server or connect to a NAS. It's also a pretty good file manager app.

If by wirelessly you mean via Wi-Fi network then one convenient option is qrcp. It generates a QR-code right in your terminal, which you can scan with a phone and send/receive files through a web interface on the URL it provides.

If you want to transfer files regularly, there is another option. Almost every distro has Python installed, and the Python has a "built-in" FTP server. You need to just cd into desired directory and run the command python -m pyftpdlib -w. It will open a FTP server with root in this directory. You then can access it through a file manager, like Material Files for example, and send files and folders back and forth. In Material Files you can save the server address for future use.

Localsend

I find the easiest approach is to connect to the pc via sftp and use a file explorer that supports it - such as ghost commander.

Install an FTP server on your phone. Connect to it via an FTP client on your PC. EZPZ.

Syncthing is great to periodically sync files between Linux and Android. And you could use it as file transfer service for occasional needs if you just share an empty directory.

There might be more modern ways of doing this, but I run "Wifi FTP server" on my phone, with my download directory as its root. Then I use filezilla or whatever to transfer what I need.

There are some browser based solutions like sharedrop.io and file.pizza. I haven't had the latter work for me though, not sure if it's still functional. They work through WebRTC to discover local candidates for receiving files, the same way that video calling typically finds the best connection.

Security

ShareDrop uses a secure and encrypted peer-to-peer connection to transfer information about the file (its name and size) and file data itself. This means that this data is never transfered through any intermediate server but directly between the sender and recipient devices. To achieve this, ShareDrop uses a technology called WebRTC (Web Real-Time Communication), which is provided natively by browsers. You can read more about WebRTC security here.

You should try kde connect

For secure private transfer use the Warp flatpak in Linux and Worrmhole William in Android.

KDE Connect

The android nextcloud client works great if you're willing to setup/maintain a nextcloud server.

• portal: cli file transfer agent between computers
• croc: simple file transfer tool via local server, with Android Appp
• transfer.sh: cli file sharing via cloud

Btw, clipboard is great too.

I'll throw out another way: to access files from your phone, you can use termux. python -m http.server

Haven't seen anyone recommend Flying Carpet, yet.

I use it to transfer files between my Windows desktop PC and my Steam Deck.

I use rclone and the Round Sync Android client.

Supports a ton of back ends, self hosted, and commercial options. You can transparently encrypt with private keys you control.

I personally use B2 Backblaze for storage.

My phone backs up every night and Round Sync pushes them to B2. On my desktop I can mount as a volume. I can also access my storage from my phone going the other direction.

I've done the same using SFTP if I don't want the overhead of persistent file storage.

It does not support indexing or previews for searching or finding say a photo. You can put whatever you want for data. So I have caches, indexes, and thumbnails that work in Linux. I can't really make use of those on my phone though.

Rclones bisync feature is also a bit dangerous when I tried to use it a year ago. I more than once "deleted" everything. B2 doesn't delete by default, just hides, so I was able to recover. I now do unidirectional syncs from my machines to different buckets until I'm motivated to investigate a proper 3-way merge solution.

Lot of people mentioning kde connect. I'm going to take a moment to clarify, kde connevts functionality is modular. you need the sshfs package for it to mount the phones filesystem over ssh. Once you've done that, it works pretty normally.