Thank you for this list. I started my career with Opnet (Riverbed purchased them in 2013) and IIRC the license cost mid five figures per year. This list tip

Thank you for this list. I started my career with Opnet (Riverbed purchased them in 2013) and IIRC the license cost mid five figures per year. This list tipped me to OmNet++ which may provide a similar DES environment. I look forward to checking it out.