32/64 bit multi-platform Ethernet S7 PLC communication suite
Arduino Ethernet library for communicating with S7 Siemens PLC
Eclipse 4diac the open source solution for industrial automation
Realtime PC-based control and simulator of control systems
A free, fast and accurate routine to compute the position of the Sun
Command-line utility to communicate with Siemens S7 PLC
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Generating PLC programs from formal specifications
PLC-Logger and Analyzer
Simple to use XML-Parser/Composer Library for B&R Automation PLC (SPS)
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openSCADA® is an open source SCADA system written in JAVA
Open Source PLC based on the arduino platform