TAT Add-In
TAT is an Add-In to ArcGIS 10.X. It is installed by simply clicking on the *.esriaddin file, while outside of an ArcMap session. The Add-In will appear as a toolbar:
Click below for latest release:
TAT Source-Code
The TAT Add-In source code is avialble on GitHub as part of the Riverscapes Consoritum family of tools.