CODESYS 4 1.0 ships a browser-based, Git-friendly PLC IDE on the same compiler and runtime. What changes vs CODESYS 3, what is missing, who should switch.
An engineer's 2026 comparison of CODESYS and TwinCAT soft-PLC runtimes: real-time determinism, fieldbus support, IEC 61131-3, EtherCAT, and a decision matrix.