Having to change programs to perform simple tasks—for example, making a quick calculation, or looking up a definition—breaks your concentration, takes you away from the task at hand, and wastes your valuable time. Enso lets you do common computing tasks easier and faster than ever before. You get a huge productivity boost and a simpler digital life.
Right now, the free Enso program only has code for Mac OS X, but work is being done to replace all the proprietary code that they are not allowed to liberate.