ntopng vs Plixer Replicator

ntopng monitors network traffic gathered from traffic mirrors, NetFlow exporters, SNMP devices, firewall logs and intrusion detection systems. Its encrypted web interface supports real-time and historical traffic exploration. Protocol detection powered by nDPI covers more than 450 Layer-7 application protocols, while metrics include application latency, round-trip time, throughput, TCP retransmission, packet loss, and VoIP jitter and MOS. It captures packets with libpcap or PF_RING and collects flows from nProbe, NetFlow and sFlow exporters. An HTTP-based RESTful API and Lua scripting are listed. Platforms include Linux, FreeBSD, Windows x64, macOS and RaspbianOS; pfSense and OPNsense are also named among supported Unix platforms. The free Community edition suggests limits of 256 live local hosts, 128K live flows and eight monitored interfaces. Paid perpetual licenses include one year of maintenance: Pro is €299, paid once, Enterprise M is €699.95, paid once, Enterprise L is €899.95, paid once, and Enterprise XL is €1,499.95, paid once.

Plixer Replicator has no write-up on Specifiction yet; its figures are above.