I proposed my people last week to quit their outlook/thunderbird/... calendar system to try Opengoo.
In less than a day, most of us had about 30/40 tasks and we were still exploring the potential of the system, especially the system of Workspace and stickers which in less than a click allow to see precisely who works on what.
Not only is it already very exhaustive but best of all, the interface is just great. It really invites to productivity and that's a big plus compared to some other solutions, valuable but not sexy at all.
Anyway, as for now, we trully thank the people behind OG for this great piece of work and are looking forward for further developments.
