STEP-NC Machine is packaged as an MSI installer. Download the MSI and double-click to install. If an earlier version is already installed, it will be replaced by the latest version. The system requirements are minimal.

• Latest Version: v20.116
• Release Date: 2026-06-29
• Change Log

• Download 64bit Installer (110mb)
• Download 32bit Installer (77mb)
• Older Versions

Request a license key after installing. Select STEP Tools | Request License Key on the Start menu. This will open a web request form and fill in the host identifier. We will send the key by e-mail and you can install it as described in Software License Keys.

To get started, open a STEP-NC file, click the "Simulate" checkbox and press play. There are sample STEP-NC files on ap238.org. You can also just open a STEP file and look at the PMI. Here are some instructions for various tasks.

Refer to the STEP-NC API Reference for information on programming with the STEP-NC DLL.