This plugin adds support for simple storage on same self hosted server.
Reading and writing is done through simple php script server.php.
User is then asked for password to access server files (which can also be changed in php script). It should be easy to rewrite server-side storage script to other programming languages as well.
Download keeweb, place it to the same directory and override in index.html
<meta name="kw-config" content="(no-config)">
to
<meta name="kw-config" content="config.json">
Update read / write password in server.php and configure path to keepass databases.