tmcbeans is a customized version of the NetBeans IDE intended to be used with the Test My Code -system.
The Test My Code -system provides automatic assignment evaluation for MOOC-courses found at mooc.fi.
The system and most of the courses are created by the University of Helsinki.
IDEs are listed as a supported category for unconfined snaps here: Process for reviewing classic confinement snaps
Also the netbeans package is currently unconfined in the snap store.