Since its version 0.60, Arma 3 Tools includes a little script called mapFolders. This script is able to link Poseidon, FSM Edit, texView and Arma 3 into your Arma 3 Tools directory. It makes these Tools available from the same place as the other tools.

To use mapFolders, just need to go into your Arma 3 Tools directory, then edit your settings.ini, finally, run mapFolders.bat and.. enjoy.