diff --git a/src/osgPlugins/CMakeLists.txt b/src/osgPlugins/CMakeLists.txt
index 2562ffaf6..e911d4c9f 100644
--- a/src/osgPlugins/CMakeLists.txt
+++ b/src/osgPlugins/CMakeLists.txt
@@ -1,5 +1,5 @@
 #---------------------------------------------------
-# OSG CMAKE SUPPORT 
+# OSG CMAKE SUPPORT
 # (C) by Michael Wagner, mtw@shared-reality.com 2005
 # (C) Eric Wing, Luigi Calori and Robert Osfield 2006-2007
 #---------------------------------------------------
@@ -22,10 +22,10 @@ ENDIF(MSVC80)
 
 SET(TARGET_DEFAULT_PREFIX "osgdb_")
 SET(TARGET_DEFAULT_LABEL_PREFIX "Plugins")
-SET(TARGET_COMMON_LIBRARIES 
+SET(TARGET_COMMON_LIBRARIES
     OpenThreads
-    osg 
-    osgDB 
+    osg
+    osgDB
     osgUtil
 )
 
@@ -75,15 +75,16 @@ ADD_SUBDIRECTORY(pnm)
 ADD_SUBDIRECTORY(dds)
 ADD_SUBDIRECTORY(tga)
 ADD_SUBDIRECTORY(hdr)
+ADD_SUBDIRECTORY(dot)
 
 IF(JPEG_FOUND)
     ADD_SUBDIRECTORY(jpeg)
 ENDIF(JPEG_FOUND)
 IF(JASPER_FOUND)
-    ADD_SUBDIRECTORY(jp2) 
+    ADD_SUBDIRECTORY(jp2)
 ENDIF(JASPER_FOUND)
 IF(GIFLIB_FOUND)
-    ADD_SUBDIRECTORY(gif) 
+    ADD_SUBDIRECTORY(gif)
 ENDIF(GIFLIB_FOUND)
 IF(PNG_FOUND)
     ADD_SUBDIRECTORY(png)
@@ -168,7 +169,7 @@ IF(QUICKTIME_FOUND)
 ENDIF(QUICKTIME_FOUND)
 
 IF(FREETYPE_FOUND)
-    ADD_SUBDIRECTORY(freetype) 
+    ADD_SUBDIRECTORY(freetype)
 ENDIF(FREETYPE_FOUND)
 IF(ZLIB_FOUND)
     ADD_SUBDIRECTORY(zip)
@@ -191,4 +192,4 @@ ENDIF(BUILD_OSGWIDGET)
 #    )
 #ENDFOREACH(myvar)
 
-    
+
diff --git a/src/osgPlugins/dot/BaseDotVisitor.cpp b/src/osgPlugins/dot/BaseDotVisitor.cpp
new file mode 100644
index 000000000..9b0c2236d
--- /dev/null
+++ b/src/osgPlugins/dot/BaseDotVisitor.cpp
@@ -0,0 +1,161 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+#include "BaseDotVisitor.h"
+
+#include <fstream>
+#include <cassert>
+
+#include <osg/Node>
+#include <osg/Geode>
+#include <osg/Group>
+
+using namespace osg;
+
+namespace osgDot {
+
+  BaseDotVisitor::BaseDotVisitor() {
+  }
+
+  BaseDotVisitor::~BaseDotVisitor() {
+  }
+
+  bool BaseDotVisitor::run( osg::Node& root, std::ostream* fout ) {
+    setTraversalMode( TRAVERSE_ALL_CHILDREN );
+    if ( fout && *fout ) {
+      root.accept( *this );
+      
+      *fout << "digraph osg_scenegraph { rankdir = LR;" << std::endl;
+      
+      *fout << _nodes.str() << _edges.str();
+      
+      *fout << "}" << std::endl;
+
+      _nodes.clear();
+      _edges.clear();
+      _objectMap.clear();
+
+      return true;
+    }
+
+    return false;
+  }
+
+  void BaseDotVisitor::apply(Node& node) { 
+    int id;
+    if ( getOrCreateId( &node, id ) ) {
+      handle( node, id );
+      handleNodeAndTraverse( node, id );
+    }
+  }
+
+  void BaseDotVisitor::apply(Geode& node) {
+    int id;
+    if ( getOrCreateId( &node, id ) ) {
+      handle( node, id );
+      handleNodeAndTraverse( node, id );
+
+      unsigned int i;
+      for ( i = 0; i < node.getNumDrawables(); i++ ) {
+        osg::Drawable* drawable = node.getDrawable( i );
+        int id2;
+        if ( getOrCreateId( drawable, id2 ) ) {
+          handle( *drawable, id2 );
+          osg::StateSet* s = drawable->getStateSet();
+          if ( s ) {
+            int id3;
+            if ( getOrCreateId( s, id3 ) ) {
+              handle( *s, id3 );
+            }
+            handle( *drawable, *s, id2, id3 );
+          }
+        }
+        handle( node, *drawable, id, id2 );
+      }
+
+    }
+
+  }
+  
+  void BaseDotVisitor::apply(Group& node) {
+    int id;
+
+    if ( getOrCreateId( &node, id ) ) {
+      handle( node, id );
+      handleNodeAndTraverse( node, id );
+
+      unsigned int i;
+      for ( i = 0; i < node.getNumChildren(); i++ ) {
+        osg::Node* child = node.getChild( i );
+        //handleNodeAndTraverse( *child );
+        int id2;
+        getOrCreateId( child, id2 );
+        handle( node, *child, id, id2 );
+      }
+
+    }
+    
+  }
+
+  void BaseDotVisitor::handle(osg::Node& node, int id) {
+  }
+
+  void BaseDotVisitor::handle(osg::Geode& node, int id) {
+  }
+
+  void BaseDotVisitor::handle(osg::Group& node, int id) {
+  }
+
+  void BaseDotVisitor::handle(osg::Group& parent, osg::Node& child, int parentID, int childID ) {
+  }
+
+  void BaseDotVisitor::handleNodeAndTraverse(osg::Node& node, int id) {
+    osg::StateSet* ss = node.getStateSet();
+    if ( ss ) {
+      int id2;
+      if ( getOrCreateId( ss, id2 ) ) {
+        handle( *ss, id2 );
+      }
+      handle( node, *ss, id, id2 );
+    }
+    traverse(node);
+  }
+
+  void BaseDotVisitor::handle(osg::StateSet& stateset, int id) {
+  }
+
+  void BaseDotVisitor::handle(osg::Node& node, osg::StateSet& stateset, int parentID, int childID) {
+  }
+  
+  void BaseDotVisitor::handle(osg::Drawable& drawable, int id) {
+  }
+  
+  void BaseDotVisitor::handle(osg::Drawable& drawable, osg::StateSet& stateset, int parentID, int childID ) {
+  }
+
+  void BaseDotVisitor::handle(osg::Geode& geode, osg::Drawable& drawable, int parentID, int childID ) {
+  }
+
+  bool BaseDotVisitor::getOrCreateId( osg::Object* object, int &id ) {
+    assert( object );
+    ObjectMap::iterator it = _objectMap.find( object );
+    if ( it != _objectMap.end() ) {
+      id = it->second;
+      return false;
+    }
+
+    id = _objectMap.size();
+    _objectMap[ object ] = id;
+    return true;
+  }
+
+} // namespace osgDot
diff --git a/src/osgPlugins/dot/BaseDotVisitor.h b/src/osgPlugins/dot/BaseDotVisitor.h
new file mode 100644
index 000000000..a39083655
--- /dev/null
+++ b/src/osgPlugins/dot/BaseDotVisitor.h
@@ -0,0 +1,77 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+#pragma once
+#ifndef __DOTBASEVISITOR_H__
+#define __DOTBASEVISITOR_H__
+
+#ifndef __cplusplus
+#error "this is a c++ - header!"
+#endif
+
+#include <sstream>
+
+#include <osg/NodeVisitor>
+#include <osg/Drawable>
+#include <osg/Group>
+#include <osg/Geode>
+#include <osg/ref_ptr>
+
+namespace osgDot {
+
+  class BaseDotVisitor : public osg::NodeVisitor {
+  public:
+    typedef std::map< osg::Object*, int > ObjectMap;
+
+  public:
+    BaseDotVisitor();
+
+    virtual ~BaseDotVisitor();
+
+    bool run( osg::Node& root, std::ostream* ostream );
+
+    virtual void apply(osg::Node& node);
+    
+    virtual void apply(osg::Geode& node);
+  
+    virtual void apply(osg::Group& node);
+
+
+  protected:
+
+    void handleNodeAndTraverse(osg::Node& node, int id);
+
+    virtual void handle(osg::Node& node, int id);
+    virtual void handle(osg::Geode& node, int id);
+    virtual void handle(osg::Group& node, int id);
+    virtual void handle(osg::StateSet& stateset, int id);
+    virtual void handle(osg::Drawable& drawable, int id);
+
+    virtual void handle(osg::Node& node, osg::StateSet& stateset, int parentID, int childID);
+    virtual void handle(osg::Group& parent, osg::Node& child, int parentID, int childID);
+    virtual void handle(osg::Geode& geode, osg::Drawable& drawable, int parentID, int childID);
+    virtual void handle(osg::Drawable& drawable, osg::StateSet& stateset, int parentID, int childID );
+
+
+    std::stringstream _nodes;
+    std::stringstream _edges;
+
+  private:
+    bool getOrCreateId( osg::Object* object, int& id );
+
+    ObjectMap _objectMap;
+
+  };
+
+} // namespace osgDot
+
+#endif // __DOTBASEVISITOR_H__
diff --git a/src/osgPlugins/dot/CMakeLists.txt b/src/osgPlugins/dot/CMakeLists.txt
new file mode 100644
index 000000000..1914c106d
--- /dev/null
+++ b/src/osgPlugins/dot/CMakeLists.txt
@@ -0,0 +1,6 @@
+#this file is automatically generated by rschmidt
+
+SET(TARGET_SRC SimpleDotVisitor.cpp BaseDotVisitor.cpp ReaderWriterDOT.cpp)
+
+#### end var setup  ###
+SETUP_PLUGIN(dot)
diff --git a/src/osgPlugins/dot/ReaderWriterDOT.cpp b/src/osgPlugins/dot/ReaderWriterDOT.cpp
new file mode 100644
index 000000000..adef25ea2
--- /dev/null
+++ b/src/osgPlugins/dot/ReaderWriterDOT.cpp
@@ -0,0 +1,41 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+#include <osgDB/ReaderWriter>
+#include <osgDB/FileUtils>
+#include <osgDB/FileNameUtils>
+#include "SimpleDotVisitor.h"
+
+class ReaderWriterDOT : public osgDB::ReaderWriter {
+  public:
+    virtual const char* className() const { return "DOT Writer"; }
+    virtual bool acceptsExtension(const std::string& extension) const { return osgDB::equalCaseInsensitive(extension,"dot"); }
+
+    virtual WriteResult writeNode(const osg::Node& node,const std::string& fileName,const Options* options = NULL) const { 
+      std::ofstream o( fileName.c_str(), std::ios_base::out );
+      if ( o ) {
+        return writeNode( node, o, options );
+      }
+
+      return WriteResult(WriteResult::ERROR_IN_WRITING_FILE);
+    }
+    
+    virtual WriteResult writeNode(const osg::Node& node,std::ostream& fout,const Options* options = NULL) const {
+      osgDot::SimpleDotVisitor sdv;
+      sdv.run( *const_cast<osg::Node*>( &node ), &fout );
+      return WriteResult(WriteResult::FILE_SAVED);
+    }
+};
+
+// now register with Registry to instantiate the above
+// reader/writer.
+REGISTER_OSGPLUGIN(dot, ReaderWriterDOT)
diff --git a/src/osgPlugins/dot/SimpleDotVisitor.cpp b/src/osgPlugins/dot/SimpleDotVisitor.cpp
new file mode 100644
index 000000000..a46170853
--- /dev/null
+++ b/src/osgPlugins/dot/SimpleDotVisitor.cpp
@@ -0,0 +1,93 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#include "SimpleDotVisitor.h"
+
+namespace osgDot {
+
+  SimpleDotVisitor::SimpleDotVisitor() {
+  }
+
+  SimpleDotVisitor::~SimpleDotVisitor() {
+  }
+  
+  void SimpleDotVisitor::handle(osg::Node& node, int id) {
+    std::stringstream label;
+    label << "<top> Node";
+    if ( !node.getName().empty() ) { label << "| " << node.getName(); }
+    drawNode( id, "record", "solid", label.str(), "black", "white" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Geode& node, int id) {
+    std::stringstream label;
+    label << "<top> " << node.className();
+    if ( !node.getName().empty() ) { label << "| " << node.getName(); }
+    drawNode( id, "record", "solid", label.str(), "black", "white" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Group& node, int id) {
+    std::stringstream label;
+    label << "<top> " << node.className();
+    if ( !node.getName().empty() ) { label << "| " << node.getName(); }
+    drawNode( id, "record", "solid", label.str(), "black", "white" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Group& parent, osg::Node& child, int parentID, int childID ) {
+    drawEdge( parentID, childID, "setlinewidth(2)" );
+  }
+
+  void SimpleDotVisitor::handle(osg::StateSet& stateset, int id) {
+    std::stringstream label;
+    label << "<top> " << stateset.className();
+    if ( !stateset.getName().empty() ) { label << "| " << stateset.getName(); }
+    drawNode( id, "record", "solid, filled", label.str(), "gray90", "white" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Node& node, osg::StateSet& stateset, int parentID, int childID ) {
+    drawEdge( parentID, childID, "dashed" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Drawable& drawable, int id) {
+    std::stringstream label;
+    label << "<top> " << drawable.className();
+    if ( !drawable.getName().empty() ) { label << "| " << drawable.getName(); }
+    drawNode( id, "record", "solid, filled", label.str(), "gray90", "white" );
+  }
+
+  void SimpleDotVisitor::handle(osg::Geode& geode, osg::Drawable& drawable, int parentID, int childID ) {
+    drawEdge( parentID, childID, "dashed" );
+  }
+  
+  void SimpleDotVisitor::handle(osg::Drawable& drawable, osg::StateSet& stateset, int parentID, int childID ) {
+    drawEdge( parentID, childID, "dashed" );
+  }
+
+  void SimpleDotVisitor::drawNode( int id, const std::string& shape, const std::string& style, const std::string& label, const std::string& color, const std::string& fillColor ) {
+    _nodes << id <<
+      "[shape=\"" << shape << 
+      "\" ,label=\"" << label <<
+      "\" ,style=\"" << style <<
+      "\" ,color=\"" << color <<
+      "\" ,fillColor=\"" << fillColor <<
+      "\"]" << std::endl;
+  }
+  
+  void SimpleDotVisitor::drawEdge( int sourceId, int sinkId, const std::string& style ) {
+    _edges
+      << sourceId << ":top -> " 
+      << sinkId   << ":top [style=\"" 
+      << style    << "\"];" 
+      << std::endl;
+  }
+
+} // namespace osgDot
diff --git a/src/osgPlugins/dot/SimpleDotVisitor.h b/src/osgPlugins/dot/SimpleDotVisitor.h
new file mode 100644
index 000000000..4c3a94235
--- /dev/null
+++ b/src/osgPlugins/dot/SimpleDotVisitor.h
@@ -0,0 +1,53 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#pragma once
+#ifndef __SIMPLEDOTVISITOR_H__
+#define __SIMPLEDOTVISITOR_H__
+
+#ifndef __cplusplus
+#error "this is a c++ - header!"
+#endif
+
+#include "BaseDotVisitor.h"
+
+namespace osgDot {
+
+  class SimpleDotVisitor : public BaseDotVisitor {
+  public:
+    SimpleDotVisitor();
+
+    virtual ~SimpleDotVisitor();
+
+  protected:
+    virtual void handle(osg::Node& node, int id);
+    virtual void handle(osg::Geode& geode, int id);
+    virtual void handle(osg::Group& node, int id);
+
+    virtual void handle(osg::StateSet& stateset, int id);
+    virtual void handle(osg::Drawable& drawable, int id);
+
+    virtual void handle(osg::Node& node, osg::StateSet& stateset, int parentID, int childID );
+    virtual void handle(osg::Geode& geometry, osg::Drawable& drawable, int parentID, int childID );
+    virtual void handle(osg::Group& parent, osg::Node& child, int parentID, int childID );
+    virtual void handle(osg::Drawable& drawable, osg::StateSet& stateset, int parentID, int childID );
+
+    virtual void drawNode( int id, const std::string& shape, const std::string& style, const std::string& label, const std::string& color, const std::string& fillColor );
+
+    virtual void drawEdge( int sourceId, int sinkId, const std::string& style );
+
+  };
+
+} // namespace osgDot
+
+#endif // __SIMPLEDOTVISITOR_H__