I am EXTREMELY pleased with Upbase - it's very easy to use, with a very low learning curve, but it's still quite powerful, and provides excellent functionality (task and calendar integration - this is the best part for me!; sophisticated task- and document management, and a superb system for personal notes). I might add that the graphic design is extremely attractive, and since I purchased it I have been handling the vast majority of my task management using Upbase. Indeed, I have tried almost every other conceivable task management software, and in fact I have licenses to many such programs, but I gave up on these programs in favor of Upbase.

For the sake of accuracy, I should note that certain features are still missing (e.g., email to task, Gcal integration), but when I contacted the developers they informed me that these functions are already on their list.

The bottom line: Upbase is a truly outstanding task- and calendaring software, and I cannot recommend it highly enough!