Our R&D institute used HORDE [1] back then. However, I was always on the lookout for something that resembles Google Calendar in functionality and usability (an

Our R&D institute used HORDE [1] back then. However, I was always on the lookout for something that resembles Google Calendar in functionality and usability (and possibly even looks). The same can be said for GMail and its Google Task integration. [1] https://www.horde.org/apps/groupware https://www.horde.org/apps/groupware