According to the official Maxum documentation , version 9.0.1 introduced several targeted improvements and fixes:

: Runs natively on macOS (OS X 10.6+) and Windows (Vista, 7, and later) with a minimal memory and CPU footprint. Current Status and Upgrading

: Corrected issues with Upload Center form field verification to ensure it works as expected.

: Added additional debug logging specifically to help administrators identify "problem clients". Core Features of Rumpus 9.0

This version was a major update that modernized the server's foundation:

: Updated security and cryptographic libraries, including OpenSSL 1.1.1x and LibSSH 0.9.X, to support modern protocols.

: Introduced User Account Self-Registration and a rebuilt Web File Manager (WFM) for a more efficient browser-based user experience.