A specialized environment for routing hoses, tubes, and electrical looms. Many manufacturing firms still use ST4 because upgrading these libraries to newer versions is costly.
To understand why users are still hunting for the ST4 download link, one must understand the state of the CAD industry when this software launched. Siemens Digital Industries Software introduced a paradigm shift with "Synchronous Technology." While ST1, ST2, and ST3 introduced the concept, was the version that truly matured.