Euler Yet another proof Engine
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
IPTV/NVR/CCTV/Video cloud https://fastocloud.com
Xplico is a Network Forensic Analysis Tool (NFAT)
Middleware for distributed applications
[UPDATE 28-10-2015] FINAL MULTIPLINK SSH LIFETIME v2.0 UP-5 "FAREWELL"
a secure, open source OS for use inside USEagency facilities
Collects data about network useage using libpcap.
NetStress is a DDoS and network stress testing tool.