[dchest]

Norton Commander (and its clones, such as Volkov Commander, DOS Navigator) was very popular in ex-USSR — almost every computer running DOS (the majority of PCs in ex-USSR back then) had nc running as the main user interface to the PC, and was introduced in most computer education courses in the 90's.

[badsectoracula]

I always found it amusing that in Chasm: The Rift (a midlate-90s FPS for DOS made by Action Forms, a Ukrainian game developer), the computer monitors had Norton Commander running:

https://i.imgur.com/63dPueK.png

[noir_lord]

For me it was Xtree, that was my favorite file manager ever.

[abcd_f]

In fact NC was so ubiquitous that it had jokes about it printed in computer magazines and circulating on the Fido network.