Cryptomator [1]. Cross-platform, allows you to encrypt your data in the cloud, and access it transparently.

Thing is, like Syncthing, it lacks a collaborative feature. Nextcloud has it, but only if you have the Nextcloud accessible (I want to host only on LAN). Something like IPFS (or Tor) is a solution to such problem.

[1] https://cryptomator.org/

> it lacks a collaborative feature

It does not, you can share folders with anyone you want without them even needing an account.

there's also resilio sync that gives you the option have the node/folder on your vps be encrypted. hopefully syncthing will add that feature at some point in the future

I have been considering spending more money than I should finding someone on a freelancer site to add the untrusted node / encrypted file transfer but don't give a certain node the key to decrypt the file support, that is the number one missing feature for syncthing for me.

It would unlock scenarios like share your files with me and I'll share files with you and neither of us will know the others files unless your house burns down in which case you can get your files back just by hookin the sync back up with the encryption key pulled from your password manager.

You can kind of work around this by sharing an ecryptfs folder.

Sadly Syncting still lacks iOS-support. As a result I'm running Nextcloud instead.

I'm on Android so it works, but I also used Nextcloud for some time and had issues with it "forgetting" about the data folder, so I had to re-create it every time it happened. I wasn't happy about that.

With Syncthing I don't (yet) have this problem.