Sd -- square dance calling computer program by Bill Ackerman
Sd is a square dance caller's helper. The program assists you in writing sequences for square dancing by doing the checker pushing. You tell the program what call you want to call next, and it computes the resulting setup and shows it to you.
SDhelper by John Bowman
SDhelper assists callers in incorporating a healthy mix of calls by presenting them in a comprehensive, fully customizable list.
(for Mac) animates the square dance calls through A2.