Hello,
I have just set up a very basic web service for Parsoid at
http://parsoid.wmflabs.org/
It gives you the ability to browse the English Wikipedia as Parsoid
currently sees it, and provides forms for wikitext -> HTML DOM and HTML
DOM -> wikitext conversion tests.
Round-tripping is brand new and very limited, and does not support the
preservation of variable whitespace, templates and other complex
constructs yet. Currently 154 parser tests are passing in the new
--roundtrip mode that Subbu added last week.
Gabriel