ZTL is one of the format supported by ZBrush application for Windows systems, developed by Pixologic. ZTL files contain parameters for various built-in tools. Zbrush is a digital sculpting tool for artists and painters.

ZBrush offers an innovative approach to 3D, 2D, and 2,5D art. It is praised for its rich an intuitive user interface. Zbrush commercial license can be purchased via an official retailer.