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@@ -3,11 +3,11 @@ Quantum transport simulations made easy
 
 **Update 15 Dec 2014**: Kwant is going to be one of the main tools in a massive open online course on `topology in condensed matter <http://tiny.cc/topocm>`_. The course will start in February, sign up!
 
-Kwant is a Python package for numerical calculations on tight-binding models
-with a strong focus on quantum transport.  It is designed to be flexible and
-easy to use.  Thanks to the use of innovative algorithms, Kwant is often faster
-than other available codes, even those entirely written in the low level
-FORTRAN and C/C++ languages.
+Kwant is a `free (open source) </license.html>`_ Python package for numerical
+calculations on tight-binding models with a strong focus on quantum transport.
+It is designed to be flexible and easy to use.  Thanks to the use of innovative
+algorithms, Kwant is often faster than other available codes, even those
+entirely written in the low level FORTRAN and C/C++ languages.
 
 Tight-binding models can describe a vast variety of systems and phenomena in
 quantum physics.  Therefore, Kwant can be used to simulate metals, graphene,