[@robkk Moderator 11 years, 3 months ago]

Are they just uploaded to the server and navigated to in the browser?

they both seem to be standalone PHP scripts.

on the SMF one the creator says how he ran it.

https://bbpress.org/forums/topic/smf-import-to-bbpress/page/5/#post-159797

The kuena one is detailed by the author here.

Kunena converter for bbPress 2.4