[max-m]

Personally I use the official KeePass 2 executable via Mono on my desktop. I would have given KeePassXC a chance but it lacks the trigger system or a simpler alternative. I use the trigger system to sync my local database with a copy on my server via the help of a shell script (because I couldn't get the SFTP / scp plugins to work properly). The trigger runs when the local database is being saved. As a first step it disables itself, as a last step it enables itself again. As a second step the trigger calls my script which downloads the database from my server. Then it runs the sync action against the freshly downloaded database and afterwards the trigger calls my script again and instructs it to upload the database to my server. I suppose this might be problematic if multiple devices try to change the remote file at the same time but that's nothing I have to worry about and other solutions like using Dropbox or other cloud storage solutions would run into some sort of problem as well (but at least you might be given the choice of which version to keep).

On my Android phone I use Keepass2Android and it's built-in SFTP support to open the remote database (and also keep a local offline-copy). When saving it seems to synchronize with the remote file first before uploading the file, so even if I change entries on both devices the copy on my server shouldn't lose any entries. But I haven't really tried to break it yet.