very usefull when you want to keep an eye on your rig while away from it, you can even restart it, overclock, undervolt, check temps, and musch more while using the free edition. Honestly, i couldn't ask of anything more (except for a few things, but they are covered by the paid version)

good service, i have used Minerstat for about 11 months now. so far i haven´t run into any issues

This is simply one of the kind managing software. We are managing over 100 rigs, everything works automatically, alert, triggers etc. OC tool is 2 leagues over others OS. Amazing!