Though there a lot of sites like http://www.computerchess.org.uk/ccrl/4040/ I can't find a site listing engine parameters.
At the moment I search a free engine
-where you can limit the search depth by engine parameter
-which works on as many platforms as possible (Windows, Linux, Mac, ..., UCI, Winboard)
but I can't find one. (I found one free engine with "Search depth" as engine parameter, but it is ignored in infinite analysis of chessbase, while another is neither free nor multiplatform.)
Another time I wish to simply change e.g. the queen value, but then I need to remember what engine offers that.