It's a Network Analysis & Simulation Tool for CAN, CAN FD, NMEA2000, J1939, CANopen, LIN by Warwick Control Technologies. Further maintenance which includes email support and updates for 1 year. Year 1 is free since X-Analyser includes 12 months maintenance. Year 2 is 25% of RRP Year 3 is 75% of RRP to encourage customers to have maintenance Year 4 or greater - 100% of RRP