Zabbix - Track, record, alert and visualize performance and availability of IT resources
Roadmap - Collision avoidance for projects and people
Abusix - Abusix is a network security company that offers email threat protection and network abuse handling solutions to ISPs, Telcos, and Cloud/Hosting Providers to stop the rapidly growing problem of email-borne threats and other kinds of network abuse.
ProductPlan - Cloud-based product roadmap software solution
FastNetMon - FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.
productboard - Beautiful and powerful product management.