Kapsules is a premier desktop widget engine software. A widget is a mini-program designed to be, well, what you want it to be!
Kapsules makes use of the Windows Scripting Host, which allows it to use any language which is availible with an Active Script Engine. That means you can use anything from VBScript to PHP to write a widget. Yeah! Even RubyScript or Perl! At current there are widgets being written in 8 different scripting languages!
Version 0.9.8.40 is the next step towards version 1.0 of Kapsules. Much effort was put into this version of Kapsules over the past month. This version is by far the biggest improvement on speed and stability as compared to any other version.
Resource usage was also given special attention for .40, and memory use is back down around what it was for some of the early versions of Kapsules. While Kapsules is still not for the "memory (RAM) challenged" it is by far the most memory efficient version.
Kapsules is free to download and free to use, so go ahead and give it a try.