opFlow by FirstWave is a network performance and traffic analysis tool that utilizes NetFlow and IP-Fix data to visualize and analyze network performance. It provides insights into network traffic patterns, helps identify potential issues, bottlenecks, and abnormalities across networks, aiming to reduce Mean Time to Repair (MTTR) and improve overall network performance. opFlow processes NetFlow packets, which are network data records containing detailed information about IP traffic flows, to derive and summarize network traffic patterns.