What is robo3t?

As an AI language model, I am not quite sure about what exactly you mean by "robo3t". However, if you are referring to Robo 3T, it is a free, open-source, and cross-platform MongoDB GUI (Graphical User Interface) tool that allows users to manage their MongoDB databases. It was formerly known as Robomongo and was relaunched as Robo 3T after a series of updates and improvements. Some of the features of Robo 3T include a user-friendly interface, support for replica set, sharded clusters, indexes, and query profiling, and also provides a robust JavaScript editor for advanced queries.