What is mate desktop environment?

The MATE Desktop Environment is the continuation of GNOME 2. It provides an intuitive and attractive desktop environment using traditional metaphors for Linux and other Unix-like operating systems.

mate-desktop.com

How to install on Devuan??

In Devuan Jessie currently mate desktop it is still in the version 1.8, waiting to find a mate 1.14 in the official repositories on hezeh.org you can find my repo that allow you to install Mate Desktop Environment version 1.14

First step add hezeh.org to your sources.list

Terminal

sudo echo "deb http://www.hezeh.org/packages jessie main contrib non-free" >> /etc/apt/sources.list

sudo echo "deb-src http://www.hezeh.org/packages jessie main contrib non-free" >> /etc/apt/sources.list
  

Second step update and install my key

Terminal

sudo apt-get update && sudo apt-get install antofox-keyrings
  

Now you can install mate-desktop-environment

Terminal

sudo apt-get install mate-desktop mate-desktop-environment