Laurie Davis

CheX was invented by George Robertson, a 97 year old computer enthusiast. He developed a paper based version of the game over a two year period with t …

Siding a wall, shingling a roof, laying patio stones? One of the challenges is where to place the individual items so that they are all evenly spaced …

Navigator is an instrument training program for general aviation pilots. It operates in two modes.In learn mode you move and/or rotate the items on th …

CoPilot is a multi-leg flight planning program for general aviation pilots. CoPilot performs detailed time, distance, heading, fuel, and weight & bala …