Cross-platform multi-protocol VPN software
Next Generation Open Source Firewall
Delay-Tolerant Networking suitable for spacecraft and ground
A library for blocking access to network on-the-fly
A benchmark suite for reliable testing of IP networks.
WinDivert: Windows Packet Divert
PeerGuardian - a privacy oriented firewall application
Linux firewall distribution geared towards home and SOHO users.
Portable DHCPv6 implementation
BGPHist stores MP-BGP updates activity and history into a database.
ICMP ping for Java
Layer 7 Latency Measurement Tool
Logs IP to IP contact, number of packets, bytes.