For dedicated roleplaying, I really like Roll20. It's specifically designed for that, and I've used it for several different groups, both from the DM side and the player side.
Roll20 looks interesting, not sure how well it would work for our mix of "play-by-mail" and video sessions.
I'll have a look (and at Trello too) -- but I lean towards something I can self-host if I am to make the effort of dragging the rest of the group away from g+/hangouts in the first place.
roll20 is great for managing the actual sessions of any table-top oriented game, but I find external tools to still be useful for between-session stuff.
