BeOS was single user and wasn't it also preemptive multi-tasking (like Win95). BeOS had innovative features like BeFS filesystem with metadata search engine, et

BeOS was single user and wasn't it also preemptive multi-tasking (like Win95). BeOS had innovative features like BeFS filesystem with metadata search engine, etc. In the end NeXT OS was the more advanced OS with a OO UI based on Unix. The first "MacOS X Server 1.0" still very much resembled NeXT OS and its in-between Rhapsody OS. https://en.m.wikipedia.org/wiki/Rhapsody_(operating_system) https://en.m.wikipedia.org/wiki/Rhapsody_(operating_system) and https://en.m.wikipedia.org/wiki/Mac_OS_X_Server_1.0 https://en.m.wikipedia.org/wiki/Mac_OS_X_Server_1.0 (unfortunately someone deleted the screenshot on Wikipedia, use Google)