The Long War research and tech trees are enormous and complicated. It can be difficult to remember which research projects are required to unlock various items and abilities. 

This simple to use search tool will show you the prerequisites (and unlocks) for any Long War tech that you select. Simply select an item on the list, or type in the name of the item you're searching for. The prerequisites and unlocks for the selected item will be displayed on screen automatically.

Installation:
Create a folder on your PC (e.g. C:\LWTechBuddy) and unzip the files.
Double click on "LWTechBuddy.exe" to start the app (this is a Windows only application).

The program makes use of the LWData.txt file which contains all the tech data. It's in a plain text format so if you find any mistakes, please correct them and send me the updates! :)

1.0a - Initial release
1.0b - Added days, cost, research columns to table view. Updated data file. If a prerequisite has already been listed in detail it will appear in abbreviated form (in brackets actually) if the same prerequisite applies to a later prerequisite.
1.0c - "aliens" changed to "alien corpses" where appropriate
1.0d - Updated to support LW beta 15f