The list of available titles is here. It's sorted by series. Most of these doujinshi are yuri; some are het, yaoi, or gen.
Please note that this is for Japanese scans only (NOT scanlations) and that it takes me a few days to scan a book and clean the scans.
(Speaking of scans, this Battle Athletes doujinshi may be of interest to Hayashiya Shizuru fans.)