docs VS remotely-save

I haven't been able to access https://docs.syncthing.net or https://forum.syncthing.net/ but I was able to access some of the docs via github. I think I've set it up according to the docs. The logs contain lots of messages like:

If you are okay with rclone (and do have vps/server/whatever somewhere) then Syncthing is the thing to do that.

https://docs.syncthing.net/

Also Syncthing information Syncthing Documentation: https://docs.syncthing.net/

I am not aware of it. You can look at their documentation or someone at r/Syncthing will be able to tell you for sure.

Syncthing https://github.com/syncthing/docs

You're not and you're actually reinventing the wheel as a couple of options for that are already available as community plugins. I've been using Remote-save for a while with a almost free private S3 bucket and encryption to sync between my computers and phone for a while.

https://github.com/remotely-save/remotely-save

It supports more than just S3 (as is listed in the README), its just what I use.

There's an Obisidian plugin for direct syncing to OneDrive that works on both mobile and desktop - this keeps you from having to deal with either triggered syncs through github or the various other, painful syncing processes.

https://github.com/remotely-save/remotely-save

I didn't try any of them to be honest. But I remember seeing a couple of posts mentioning their drawbacks. With that said, you may follow this documentation on how to connect your DropBox.

It can be done today. https://github.com/remotely-save/remotely-save

What are the specific advantages of using Remotely Save plugin compared to simply saving the vault in OneDrive?

I use Remotely Save plugin synced with a free tier OneDrive (sadly gdrive isn't supported) and it works very well. Maybe if you not find any alternatives good enought (most of then are a bit hard to setup and maintain) and do not want to pay the official sync plugin than this may work for you as worked for me.

You can use Remotely Save plug-in. It is a life saver for me to sync between different devices.

I'm currently using Remotely save without problems between Windows, iPad and Android.

My Nextcloud instance also synchronizes my Obsidian vault so highlits after uploading are available also there on desktop. On mobile I also use Obsidian with remotely-save plugin https://github.com/remotely-save/remotely-save so I have access to all uploaded files.

You might want to check Remotely Save