Installation & licensing notes
| Software | License | Language | Free forever? | |----------|---------|----------|----------------| | | Free for non-commercial | IEC 61131-3 (Ladder, ST, FBD, etc.) | Yes | | OpenPLC | Open source (GPL) | Ladder, C | Yes | | Connected Components Workbench (Rockwell) | Free for Micro800 | Ladder, FBD | Yes | | TwinCAT 3 (Beckhoff) | Free 7-day trial (renewable) | All IEC | Yes (time-limited but rearmable) | Proficy Machine Edition 8.5 Free Download
Proficy Machine Edition 8.5 is powerful but outdated. A “free download” from untrusted sources is never worth compromising your OT security or legal standing. Always go official or open-source. Installation & licensing notes | Software | License
Proficy Machine Edition is an integrated development environment (IDE) designed specifically for GE’s programmable controllers, including the RX3i, RX7i, VersaMax, and Series 90-30. Version 8.5, released in the mid-2010s, stabilized many features from earlier versions and introduced enhanced debugging tools. Always go official or open-source
: All versions of the software can be installed and used in a free trial mode for 4 days. This mode is fully functional but restricted to one project at a time.
Machine Edition 8.5 is a that combines: