I made this java demo last year, but did not realize until this weekend that it simulates the Rindler Horizon. (I knew it did something strange and surprising, but I didn't know it was called the Rindler Horizon.)
http://www.wiu.edu/users/jdd109/stuff/relativity/LT.html
(1) Draw several approximately vertical lines on the diagram (click, drag, and release)
(2) Press the "Constant Acceleration" Button, and the "Pass Time" button.
(3) Wait, and watch as the vertical lines converge to one line; The point where change in length contraction over time, and the change in position over time exactly cancel out.
(4) At the point where the blue lines meet the horizontal axis, click to create an event. This event will remain stationary for a little while before drifting off. If you could click exactly on the point, (and there weren't any rounding errors or discontinuous velocity jumps in the demo) the event would stay perfectly stationary.
(5) If you want to draw a photon, try to find the slope where the line turns red.