FastNetMon - FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.
productboard - Beautiful and powerful product management.
nfsen-ng - nfsen-ng aims to be an in-place replacement for the ageing nfsen.
Andrisoft WanGuard - DDoS protection software solution for networks. Attacks detected by NetFlow,NetStream,sFlow,jFlow,IPFIX,Port Mirroring and mitigated with firewall filters
Zabbix - Track, record, alert and visualize performance and availability of IT resources
ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.