Published at LXer:
We’ve recently implemented Horde ( http://www.horde.org ) for internal mail, calendaring and task management. With tool suites like these available, the old guard must be getting nervous. This may be obvious, but with the new Horde implementation (and Imp, Kronolith, Turba, Ingo, and Nag), our need for a commercial internal collaboration suite has been obviated. We probably wouldn’t have purchased such a suite (certainly not from a closed source vendor) so perhaps this isn’t a big deal in our case. I'm wondering how many times this scene is played out every day of every week.