This is a community designed tech tree designed to support as many mods as possible and extend the KSP tech tree without affecting the stock tree.
Forum thread: http://forum.kerbalspaceprogram.com/threads/98409
To install, place the GameData folder inside your Kerbal Space Program folder. If asked to overwrite files, do so.
The contents of this pack are distributed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (http://creativecommons.org/licenses/by-nc-sa/4.0/legalcode).
You are free to share and adapt the materials only for non-commercial purposes and when providing appropriate attribution. Any derivatives must be distributed under the same license.
Tech Manager is distributed under its own license, for more details see http://forum.kerbalspaceprogram.com/threads/98293