What does the full research tree look like?
Here is an alternative research tree that you might find userful
http://www.xdude.com/images/xcom-enemy-unknown-2012-tech-tree-research-chart.png
Here's a chart, with neat colors:
(Click to expand)
Previous versions:
- Click for version 2.1
- Click for version 2.0
- Click for version 1.0
This is only from a couple of sources, (here and here) so it could probably use some verification. Reddit provided some input as well. Feedback is welcome.