In my Internet menu I have chromium browser installed. I have tried to remove chromium as follows
sudo apt-get purge chromium
uninstalling through the boutique application manager
Chromium remains and will open if clicked on.
You didn't mention which version of Ubuntu MATE you have installed. In later versions of Ubuntu Chromium has been switched to a snap.
In the command line can you run this:
snap list
If you see chromium
Then run: sudo snap remove chromium
3 Likes
Thanks it worked. I am uncertain what occurs when I install chromium through the boutique. Does 2 versions of chromium exist on the system?
It's complicated 
During the 19.10 release Chromium was changed from a .deb package to a snap package. The .deb of Chromium became a transitional package that installed the snap package.
ATM Software Boutique does not support snap (or flatpak), support for those will hopefully come in a future release.
You can read a lot more details about this here: