I'm a long-term big fan of Listary... When at my PC, I more or less 'live' within my favourite file manager,
Total Commander. Listary's ability to steer the dialog box to whatever is the active directory in TC is invaluable. Listary supports several other file managers etc. too.
Suggestion - from a non-programmer... I don't know how Listary acquires the active directory from the file managers.
If FARR can offer the same information (ask Mouser), maybe you could persuade Channing to add it to Listary?
DC has older discussions on dialog box extenders, but I believe they mostly offer favourite and recent directories, not the switching feature that's so useful that for me, it's more less worth the modest asking cost of Listary on its own.