Monitor Apache using SNMP
Simple TCP proxy [MOVED to github!]
PostgreSQL monitoring for Zabbix
Lightweight fully extendable client/server application framework
Programmable completion code (bash) for ipset (netfilter.org)
VPCS
Simple meta-server for locating other multiplayer servers
ARP handler inspection
Bluetooth Low Energy (BLE) packet sniffer and transmitter
Network link bonding/trunking/aggregation and multichannel VPN daemon
The Internet of Things
NfSen plugin to generate and analyze per-IP statistics
port scan on computers from unix or linux console