Golden Days by Takao Shigeru.
Manabi no Kuni by Shinomiya Shino.
Slow Starter by Ichikawa Kei.
Neko ni Naritai by Hirakita Yuya.
Shinkuu Yuusetsu by Bikke.
Ame Nochi Hare by Bikke.
Kabe no Naka no Tenshi by Bikke (I'm in love with Bikke).
Sora to Hara, Doukyuusei, and Sotsugyousei by Nakamura Asumiko (I'm also in love with her).
Kawaii by Sakamoto Mano.
No.6 by Asano Atsuko.
Ilegenes by Kuwabara Mizuna.
Houkago no Fujun by Kajigaya Michiru.
But seriously, is DokiDoki still active? Well, at least they somewhat update their website unlike 801 Media. I think it would be easier to just merge June, DokiDoki, and 801 Media into one website, and just publish the titles under the different labels if you don't want to do away with it all.