John's Software Page

2013-01-14. Interactive Möbius transformation.

2011-08-31. I've released Abe, a block-chain database and web tool for Bitcoin and similar currencies.

2011-01-19. Interactive number line in SVG and JavaScript. Click to zoom in. Ctrl-click to zoom out. Drag or wheel to move. Tested with Firefox 3.6.

2010-11-04. Working on an idea to give C cheap, full continuations: FuncC.

2010-04-24. What the world needs, or maybe not: another Scheme implementation.