NethServer is described as 'Application manager for Linux servers. The product's main feature the ability to easily and quickly install and manage instances of applications over multiple nodes. It allows users to deploy services, like [Nextcloud](https://alternativeto' and is a server management tool in the security & privacy category. There are more than 10 alternatives to NethServer for a variety of platforms, including Linux, Self-Hosted, Web-based, BSD and VirtualBox apps. The best NethServer alternative is YunoHost, which is both free and Open Source. Other great apps like NethServer are pfSense, Sandstorm, StartOS and Cloudron.
Both NethServer and Zentyal are similar systems. Both are AD servers with lots of similar optional functions. Neth is based oc CentOS, Zentyal on Debian/Ubuntu