No one has mentioned Lotus SmartSuite. Now that IBM owns it, it must be the best.
Go Big Blue
And sometimes I really miss MultiMate.....


I must agree, MS Office has become the standard. Not the best, but the standard. At the bank where I use to work, we used Lotus products a lot. But the corporate guys got hooked on MS Office because they claimed it was "easy to use" (in violation of the existing standards), so we had to have both just to communicate with everyone. The standards at the bank eventually moved to MS Office. Not because it was better, but because it was more prevalent and it was costly having two product suites.
I used to use Project Workbench for project management, and it had a lot of strong forecasting and actuals reporting features that MS Project still can't do. But again, others I needed to communicate with were using MS Project, and so we eventually switched.
MS Office may not be the best, but it is the most used, and in order to communicate with others