While I can't comment on the effectiveness of any of these tools, I have to say that the aggressive marketing cracks me up.
If your customers’ business and technology needs have outgrown IBM Lotus Notes, they're not alone. Many enterprise system customers are choosing to upgrade their legacy email technologies to Microsoft collaboration and productivity solutions.
As much as I'm not missing the Notes Client for day to day "collaboration", and as much as I'm not missing working on an old outdated platform which has 0 day to day interest in terms of active / current web projects, I do miss having a Domino Server about. You could do anything* to good old Domino, and it would just get on with the job..
(*) Wellllll.. not quite anything.. I recently found out that adminp gets quite distressed when an ex Administrator puts in an adminp request to delete themselves, but hey, that's another story.