Comment Re:Tastes change over time (Score 1) 503
For 'really similar' to twm - I'd suggest mwm or fvwm
for 'generally lightweight and non-tiling', I'd suggest windowmaker - and you can always run it in tandem with your favorite 'desktop' / 'file manager' application
with a bit of tweaking..
I run windowmaker with xfdesktop/thunar in a dockapp - lets me 'gui desktop' when I want to, but 'window manage' otherwise..
side note - I'm not a fan of tiling managers, for whatever that's worth.