Enpass
Enpass is a Password Manager Program which can sync via WebDav and also supports your own Cloud Destination. It also has mobile Clients in its portfolio.
The Program you can get here: https://www.enpass.io/downloads/
Silent Install worked like a charm with /S which I got from here: https://discussion.enpass.io/index.php?/topic/2171-silentunattended-installation/&tab=comments#comment-5956
<?xml version="1.0" encoding="UTF-8"?>
<packages:packages xmlns:packages="http://www.wpkg.org/packages" xmlns:wpkg="http://www.wpkg.org/wpkg" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wpkg.org/packages ../xsd/packages.xsd" >
<package id='enpass' name='Enpass' revision='1' priority='10' reboot='false' >
<variable name="version" value="6.0.2.240" />
<check type='uninstall' condition='versiongreaterorequal' path='Enpass' value="%version%" />
<install cmd='%COMSPEC% /C start /wait "Enpass" "%SOFTWARE%\Enpass\Enpass-setup.exe" /ALLUSER /S'/>
<upgrade include="install"/>
</package>
</packages:packages>