ipfix-forwarder listens for IPFIX (RFC 5101) streams sent over UDP, parses, pre-processes, includes (VMware) vendor fields, converts to JSON and optionally can forward JSON string representation to a custom syslog destination.
NetFlow version 1, 5, 7, 8, 9 & 10 (IPFIX) support for Go
NetFlow Generator for Testing Flow Collection Apps
Enterprise Network Flow Collector (IPFIX, sFlow, Netflow) from Verizon Media
The high-scalability sFlow/NetFlow/IPFIX collector used internally at Cloudflare.