JsonCpp is now licensed under MIT license, or public domain if desired and recognized in your jurisdiction.

diff --git a/include/json/value.h b/include/json/value.h
index f7b9c34..4de2c26 100644
--- a/include/json/value.h
+++ b/include/json/value.h
@@ -1,3 +1,8 @@
+// Copyright 2007-2010 Baptiste Lepilleur
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
 #ifndef CPPTL_JSON_H_INCLUDED
 # define CPPTL_JSON_H_INCLUDED