This is MATE Menu, a fork of MintMenu.

• MATE Menu removes the Mint specific search options.
• MATE Menu removes package management features.

Personally I'm not the least bit interested in using the MATE Menu but I see that it is regularly requested in the Ubuntu MATE community. So consider MATE Menu a gift from me, to you :-)

MATE Menu needs translators!

• https://www.transifex.com/projects/p/MATE/resource/mate-mate/