Partially. The main program runs, but the built-in PDF viewer and some schematic controls crash frequently. Use Windows 10 for best results.
Caterpillar does not offer SIS as a free public download. The 2021 version was distributed through three legitimate channels: cat sis 2021 download
This completely eliminates the need for a risky from an untrusted source. Partially
Because the 2021 version is a fully offline product, the setup is massive—around for the setup and database files. Storage Space: You need at least of free HDD space for a local installation. Operating System: It runs exclusively on Windows 7, 8.1, or 10 (Linux and Mac are not supported). Web Browser: Internet Explorer 9–11 Caterpillar does not offer SIS as a free public download
CAT SIS 2021 represents the mature stage of the "SIS 2.0" architecture. Unlike the legacy Flash-based versions of the past, SIS 2021 is built on modern web technologies. This allows for faster searching and better organization of data. For many shops, upgrading to the 2021 version was the first time they moved away from the classic interface they had used for decades.