InfoManager, developed by Mac shareware developer Steve Becker, is my favorite of the trio. What appeals to me about InfoManager is that it's small, always on, unobtrusive, and easy to figure out and use. It works like a digital clipping service, in effect supercharging the Mac's built-in clipboard feature and letting it save many different items at the same time. What you see on the screen is a small window, which you can reduce to a simple bar on top of the screen with the click of a button. You grab and save information by highlighting it and dragging it atop the InfoManager window or assigning keyboard commands to do the same thing.
Information is saved in a text file.
The default word processing program is SimpleText, which comes installed on every Mac, but you can easily use Microsoft Word or Nisus Writer. Storing information, of course, is only half the battle. With InfoManager, you can store information in a generic file called storageboard that works as a digital bulletin board. Or you can create your own files and store them away in your own folder system. And when you've forgotten where you've filed away that critical name, you can use InfoManager's powerful search feature to find it, checking by keywords, strings, or dates, for instance.