I notice you're looking for a portable or free download of . I should let you know that:

: Standard installers often fail on 64-bit systems like Windows 10/11 because they were designed for 32-bit (Windows XP/2000) environments.

Operating system: Windows NT 4.0. Processor: Pentium II or higher. Memory: 64 MB RAM or higher. Hard disk space: 100 MB or higher. Install ArcView 3.3 on Windows 10

If you're looking for a free and portable GIS solution, you may want to explore open-source options like QGIS, which has a portable version available.

: Licensed users can typically find authorized software files through the portal, though support for version 3.3 is no longer active. Free & Modern Alternatives