Littlecurvieme,
I know of no website, but there was an article in the Holistic Eduation Review (winter 1990) called "Parallel Paths: A Conversaton Among Montessori and Waldorf Educators." I don't know if this mag still exists or has back issues. I received a photocopy in my Waldorf teacher training six years ago.
A quote from the intro:
"Both Montessori and Steiner viewed their educational work as part of a larger transformation of modern Western culture-- from materialistic to more humane and spiritual values, from competition and conflict to personal and global peace. They both asserted that this shift of values must involve a new way of raising and educating children, so that the deep, inherent potentials of humankind could at least be freed from social, economic and nationalistic prejucices and be fully cherished and nurtured."
The article is a discussion/interview with 2 Steiner educators and 2 Montessori, moderated by Ron Miller who was trained as a Montessori teacher and studied Waldorf as part of his doctoral research. The article is looong and fascinating!
Hope it is available.