"Studio 3T took the decision to create a free edition of their tool suite to replace Robo 3T which matched the functionality and would be able to track future MongoDB developments."

Robomongo / Robo3T was the perfect set of functionality at no cost. Feels like the goal of matching functionality was missed by not having the ability to right click a document and edit the JSON (along with the validation Robo3T had). Critical enough of a feature that I'll be moving over to another tool until resolved.