These technology graphs are in png format. If you can't see the image in your browser please download them and use an image viewer. There is one included in Windows - right click on the png file and select Preview.
Research and Buildings
Both these entity types on one graph. I think this is the best graph in terms of being usable.
Complete Tree (in svg format)
A combined graph of all four entity types. It's really too cluttered to be of any use but it's cool just to see it :-).
Svg is a graphics format which should be viewable in Internet Explorer and FireFox.
You can also download a zip file with all the graphs in it.
