
I have been using Labshock for a couple years now in the class I teach at George Mason University. I have found that it is easy to use and provides students with a really good virtualized set of ICS/OT environments. It runs on multiple platforms without any difficulty and the developers are extremely responsive if any issues do come up. The free version is good enough for students to get an introduction with more advanced features available in the paid subscriptions. Review collected by and hosted on G2.com.
If there was one downside to Labshock, it would be the time limit on the free account. Some of the software packages used by Labshock have limitations on how long they can run continuously for free/community editions. Users have to restart their instance after this time limit, but they will maintain their current positions so it is a minor inconvenience. Review collected by and hosted on G2.com.