diff --git a/devtools/licenseupdater.py b/devtools/licenseupdater.py
new file mode 100644
index 0000000..03e0467
--- /dev/null
+++ b/devtools/licenseupdater.py
@@ -0,0 +1,93 @@
+"""Updates the license text in source file.
+"""
+
+# An existing license is found if the file starts with the string below,
+# and ends with the first blank line.
+LICENSE_BEGIN = "// Copyright "
+
+BRIEF_LICENSE = LICENSE_BEGIN + """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
+
+""".replace('\r\n','\n')
+
+def update_license( path, dry_run, show_diff ):
+    """Update the license statement in the specified file.
+    Parameters:
+      path: path of the C++ source file to update.
+      dry_run: if True, just print the path of the file that would be updated,
+               but don't change it.
+      show_diff: if True, print the path of the file that would be modified,
+                 as well as the change made to the file. 
+    """
+    with open( path, 'rt' ) as fin:
+        original_text = fin.read().replace('\r\n','\n')
+        newline = fin.newlines and fin.newlines[0] or '\n'
+    if not original_text.startswith( LICENSE_BEGIN ):
+        # No existing license found => prepend it
+        new_text = BRIEF_LICENSE + original_text
+    else:
+        license_end_index = original_text.index( '\n\n' ) # search first blank line
+        new_text = BRIEF_LICENSE + original_text[license_end_index+2:]
+    if original_text != new_text:
+        if not dry_run:
+            with open( path, 'wb' ) as fout:
+                fout.write( new_text.replace('\n', newline ) )
+        print 'Updated', path
+        if show_diff:
+            import difflib
+            print '\n'.join( difflib.unified_diff( original_text.split('\n'),
+                                                   new_text.split('\n') ) )
+        return True
+    return False
+
+def update_license_in_source_directories( source_dirs, dry_run, show_diff ):
+    """Updates license text in C++ source files found in directory source_dirs.
+    Parameters:
+      source_dirs: list of directory to scan for C++ sources. Directories are
+                   scanned recursively.
+      dry_run: if True, just print the path of the file that would be updated,
+               but don't change it.
+      show_diff: if True, print the path of the file that would be modified,
+                 as well as the change made to the file. 
+    """
+    from devtools import antglob
+    prune_dirs = antglob.prune_dirs + 'scons-local* ./build* ./libs ./dist'
+    for source_dir in source_dirs:
+        cpp_sources = antglob.glob( source_dir,
+            includes = '''**/*.h **/*.cpp **/*.inl''',
+            prune_dirs = prune_dirs )
+        for source in cpp_sources:
+            update_license( source, dry_run, show_diff )
+
+def main():
+    usage = """%prog DIR [DIR2...]
+Updates license text in sources of the project in source files found
+in the directory specified on the command-line.
+
+Example of call:
+python devtools\licenseupdater.py include src -n --diff
+=> Show change that would be made to the sources.
+
+python devtools\licenseupdater.py include src
+=> Update license statement on all sources in directories include/ and src/.
+"""
+    from optparse import OptionParser
+    parser = OptionParser(usage=usage)
+    parser.allow_interspersed_args = False
+    parser.add_option('-n', '--dry-run', dest="dry_run", action='store_true', default=False,
+        help="""Only show what files are updated, do not update the files""")
+    parser.add_option('--diff', dest="show_diff", action='store_true', default=False,
+        help="""On update, show change made to the file.""")
+    parser.enable_interspersed_args()
+    options, args = parser.parse_args()
+    update_license_in_source_directories( args, options.dry_run, options.show_diff )
+    print 'Done'
+
+if __name__ == '__main__':
+    import sys
+    import os.path
+    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+    main()
+