Sorry, I was pointed to this topic just now
On the top page there is the link to risk disclaimers and license:
Before you continue surfing this site, please read our Disclaimers and License (http://fxcodebase.com/wiki/index.php/FxCodeBaseWiki:General_disclaimer)In short, the license for indicators published by FXCODEBASE team and/or Gehtsoft USA employees is BSD-based license. BSD allows you to distribute the materials in any manner, including sale, BUT the product that consists of fxcodebase's material must clearly refer to fxcodebase in it's copyright information.
However, indicators published by 3rd parties may have own license, please verify with the author about conditions of the indicator use and distribution.