Electric Keys puts a slice of music history at your fingertips with the most complete collection ever of classic and vintage electric pianos, clavs, organs, strings machines, tape sampler and other electric keyboard instruments.
Time Circuits is a little desktop utility to show the calendar appointments. Graphical Style is a tribute to "Back to The Future" trilogy. Time Circuits is easy to use and has a friendly interface and also is free to download and use.
Logisim is an educational tool designed to help you with the design and simulation of digital logic circuits, featuring a simple-to-learn interface, hierarchical circuits, wire bundles, and a large component library.