Command-line utility to communicate with Siemens S7 PLC
32/64 bit multi-platform Ethernet S7 PLC communication suite
Vehicle Weighing Software
Arduino Ethernet library for communicating with S7 Siemens PLC
PLC-Logger and Analyzer
A wireshark dissector plugin for the IEEE 1905.1 protocol.
a tool for process identification and controller design
Open Source PLC based on the arduino platform