Studio 3T Free (new)
====================
Robo 3T is now Studio 3T Free

Studio 3T Free comes with a full product 30-day trial.
Once this period is over, continue using the Free-forever version.

https://studio3t.com/


Robo 3T (older)
===============
(formerly Robomongo)

"Robo 3T 1.4 brings support for MongoDB 4.2,
and a mongo shell upgrade from 4.0 to 4.2,
with the ability to manually specify visible databases."

https://robomongo.org/download

Download it, install it, try it.