Gravitational Lensing 

With this program, one can draw images to see the effect of gravitational lensing. You can easily test the effects of several parameters by changing them and redrawing the image.
gravitational lens lensing gravitation astrophysics einstein bend light quasar galaxy

Print Merge Numerator 

With this program & Corel DRAW you can print anything with serial numbers. Serial numbers will be replaced automatically.
print merge numerator generator numeration tickets corel number numbering serial design designer

Japan Riddles 

Japan Riddles is a computer variant of popular puzzles known as Nonograms, Griddlers, Paint by Numbers or Japan Crossword Puzzles. Goal is to draw a picture discovering what cells to paint based on numbers on the left and top of the picture.
nonograms puzzle logic game griddlers paint by numbers japan crossword puzzles

Java Slideshow Applet 

Draw attention to your photos or create your own slideshow with the free Java Slideshow Applet. Java Slideshow Applet displays a sequence of images enhanced with a fading effect.
java applet slideshow slide show photo album photoalbum presentation powerpoint free freeware images effect

AMarker 

This provides alternative ways to launch programs and to protect your computer from erroneous mouse clicks. Just draw colored transparent regions over the screen and assign a mouse-click action to the area.
launcher desktop desktop launcher prohibit protect mouse child keyboard shortcuts icons screen

Stackomania 

Stackomania is a fun card game. Start with a random stack of numbered cards. You win if you put your cards in order first. Use the Discard and Draw Piles to replace cards you don't want. Play against the compter or a human opponent over the internet.
stackomania