Cura 15.04 — Download 'link'

Many users prefer this version because it provides a "no-frills" slicing experience. Legacy Cura version 15.04.06 - Ultimaker forum

Once the download is complete, run the installer and follow the installation instructions: cura 15.04 download

Since this version is considered "legacy" (and over a decade old), it is no longer prominently featured on the main UltiMaker download page . To download it safely, you should use official repositories rather than third-party sites: Many users prefer this version because it provides