Hello

Is there any way to have a non-threaded mode? I mean, like most of BBS, main forum listing subforums ...

No, but there are categories and a category filter.

... , subforums listing threads ...

No, but there are categories and a category filter.

... and threads on a linear mode ...

That was possible but it is years ago. You can rewrite the table view of all threads. The disadvantage is that you have to control your rewrites in case of an update to a newer software version.

Any help would be appreciated :)

use one of the "most of BBS"

Tschö, Auge