Well, here is one for SoTS II !
I made it not even looking at the tree in game as I were never able to research it completly so some techs might be arranged diffently than in game but its not a big problem.
Check out the v2 chart here:
http://img843.imageshack.us/img843/8874/s53z.png
(warning, it's BIG)
You can also download it from attachment if something happens to this link.
// EDIT
V2 chart finished :>
// EDIT 2
Work on Version 3 has started.
This version will introduce tech icons, descriptions and links to sots2 wiki.
Sadly I have no FTP to put it on so I'll just put all required files in .zip as an attachment here, you can view it in any broswer (tested on Firefox and Chrome) by opening Techtree.html in main folder, img foler contains all required images including icons and techtree background.
Currently only Energy Weapons tree has been upgraded to v3, other trees are displayed as were in v2, check it out yourself
