diff --git a/etk/FlatTree.hpp b/etk/FlatTree.hpp
new file mode 100644
index 0000000..950b77f
--- /dev/null
+++ b/etk/FlatTree.hpp
@@ -0,0 +1,231 @@
+/**
+ * @author Edouard DUPIN
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * @license MPL-2 (see license file)
+ */
+#pragma once
+
+#include <etk/types.hpp>
+//#include <etk/debug.hpp>
+#include <etk/Stream.hpp>
+#include <etk/Allocator.hpp>
+#include <etk/TreeNode.hpp>
+
+namespace etk {
+	template<class ETK_TREENODE_TYPE> class FlatTree {
+		public:
+			# if 0
+			//static const size_t npos = size_t(-1);
+			class Iterator {
+				private:
+					size_t m_current; //!< current Id on the vector
+					FlatTree<ETK_TREENODE_TYPE>* m_tree; //!< Pointer on the current element of the vectorBin
+				public:
+					/**
+					 * @brief Basic iterator constructor with no link with an etk::Vector
+					 */
+					Iterator():
+					  m_current(0),
+					  m_tree(null) {
+						// nothing to do ...
+					}
+					/**
+					 * @brief Recopy constructor on a specific etkVector.
+					 * @param[in] _obj The Iterator that might be copy
+					 */
+					Iterator(const Iterator & _obj):
+					  m_current(_obj.m_current),
+					  m_tree(_obj.m_tree) {
+						// nothing to do ...
+					}
+					/**
+					 * @brief Assignation operator.
+					 * @param[in] _otherIterator The Iterator that might be copy
+					 * @return reference on the current Iterator
+					 */
+					Iterator& operator=(const Iterator & _otherIterator) {
+						m_current = _otherIterator.m_current;
+						m_tree = _otherIterator.m_tree;
+						return *this;
+					}
+					/**
+					 * @brief Basic destructor
+					 */
+					~Iterator() {
+						m_current = 0;
+						m_tree = null;
+					}
+					/**
+					 * @brief basic boolean cast
+					 * @return true if the element is present in the etkVector size
+					 */
+					operator bool () {
+						return (m_current < m_tree->size());
+					}
+					/**
+					 * @brief != Comparaison operator
+					 * @param[in] _obj Object to compare
+					 * @return true if the element are different
+					 */
+					bool operator!= (const Iterator& _obj) {
+						if (    m_tree != _obj.m_tree
+						     || m_current != _obj.m_current) {
+							return true;
+						}
+						return false;
+					}
+					/**
+					 * @brief == Comparaison operator.
+					 * @param[in] _obj Object to compare.
+					 * @return true if the element are identical.
+					 */
+					bool operator== (const Iterator& _obj) {
+						if (    m_tree == _obj.m_tree
+						     && m_current == _obj.m_current) {
+							return true;
+						}
+						return false;
+					}
+					/**
+					 * @brief Incremental operator
+					 * @return Reference on the current iterator increment
+					 */
+					Iterator& operator++ () {
+						if (    m_tree != null
+						     && m_current < m_tree->size() )
+						{
+							m_current++;
+						}
+						return *this;
+					}
+					/**
+					 * @brief Decremental operator
+					 * @return Reference on the current iterator decrement
+					 */
+					Iterator& operator-- () {
+						if (    m_tree != null
+						     && m_current > 0) {
+							m_current--;
+						}
+						return *this;
+					}
+					/**
+					 * @brief Incremental operator
+					 * @return Reference on a new iterator and increment the other one
+					 */
+					Iterator operator++ (int32_t) {
+						Iterator it(*this);
+						++(*this);
+						return it;
+					}
+					/**
+					 * @brief Decremental operator
+					 * @return Reference on a new iterator and decrement the other one
+					 */
+					Iterator operator-- (int32_t) {
+						Iterator it(*this);
+						--(*this);
+						return it;
+					}
+					Iterator& operator-= (size_t _offset) {
+						m_current -= _offset;
+						return *this;
+					}
+					Iterator operator- (size_t _offset) const {
+						Iterator tmp(*this);
+						tmp -= _offset;
+						return tmp;
+					}
+					Iterator& operator-= (int _offset) {
+						m_current -= _offset;
+						return *this;
+					}
+					Iterator operator- (int _offset) const {
+						Iterator tmp(*this);
+						tmp -= _offset;
+						return tmp;
+					}
+					Iterator& operator-= (int64_t _offset) {
+						m_current -= _offset;
+						return *this;
+					}
+					Iterator operator- (int64_t _offset) const {
+						Iterator tmp(*this);
+						tmp -= _offset;
+						return tmp;
+					}
+					Iterator& operator+= (size_t _offset) {
+						m_current += _offset;
+						return *this;
+					}
+					Iterator operator+ (size_t _offset) const {
+						Iterator tmp(*this);
+						tmp += _offset;
+						return tmp;
+					}
+					Iterator& operator+= (int _offset) {
+						m_current += _offset;
+						return *this;
+					}
+					Iterator operator+ (int _offset) const {
+						Iterator tmp(*this);
+						tmp += _offset;
+						return tmp;
+					}
+					Iterator& operator+= (int64_t _offset) {
+						m_current += _offset;
+						return *this;
+					}
+					Iterator operator+ (int64_t _offset) const {
+						Iterator tmp(*this);
+						tmp += _offset;
+						return tmp;
+					}
+					/**
+					 * @brief Get reference on the current Element
+					 * @return the reference on the current Element 
+					 */
+					ETK_TREENODE_TYPE* operator-> () const {
+						return &m_tree->get(m_current);
+					}
+					/**
+					 * @brief Get reference on the current Element
+					 * @return the reference on the current Element 
+					 */
+					ETK_TREENODE_TYPE& operator* () const {
+						return m_tree->get(m_current);
+					}
+				private:
+					Iterator(const FlatTree<ETK_TREENODE_TYPE> * _obj, int32_t _pos):
+					  m_current(_pos),
+					  m_tree(const_cast<FlatTree<ETK_TREENODE_TYPE> *>(_obj)) {
+						// nothing to do ...
+					}
+					size_t getCurrent() const {
+						return m_current;
+					}
+					friend class FlatTree;
+			};
+			#endif
+		private:
+			etk::Vector<const ememory::SharedPtr<etk::TreeNode<ETK_TREENODE_TYPE>>> m_data;
+		public:
+			FlatTree() {
+				
+			}
+			void setRoot(const ememory::SharedPtr<etk::TreeNode<ETK_TREENODE_TYPE>>& _root) {
+				m_data.clear();
+				append(_root);
+			}
+		private:
+			void append(const ememory::SharedPtr<etk::TreeNode<ETK_TREENODE_TYPE>>& _node) {
+				if (_node == null) {
+					return;
+				}
+				m_data.pushBack(_node);
+				for (auto& it:_node->getChilds()) {
+					append(it);
+				}
+			}
+	};
+}
diff --git a/etk/TreeNode.hpp b/etk/TreeNode.hpp
new file mode 100644
index 0000000..d5cf3aa
--- /dev/null
+++ b/etk/TreeNode.hpp
@@ -0,0 +1,129 @@
+/**
+ * @author Edouard DUPIN
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * @license MPL-2 (see license file)
+ */
+#pragma once
+
+#include <etk/types.hpp>
+//#include <etk/debug.hpp>
+#include <etk/Stream.hpp>
+#include <etk/Allocator.hpp>
+#include <etk/Function.hpp>
+#include <ememory/SharedPtr.hpp>
+#include <ememory/EnableSharedFromThis.hpp>
+
+namespace etk {
+	template<class ETK_TREENODE_TYPE> class TreeNode : public ememory::EnableSharedFromThis<TreeNode<ETK_TREENODE_TYPE>> {
+		public:
+			TreeNode(ETK_TREENODE_TYPE&& _data):
+			  m_data(_data) {
+				
+			}
+			ETK_CONSTRUCTOR_MOVE_DELETE(TreeNode);
+			ETK_CONSTRUCTOR_COPY_DELETE(TreeNode);
+			static ememory::SharedPtr<TreeNode> create(ETK_TREENODE_TYPE&& _data) {
+				return ememory::makeShared<TreeNode>(etk::forward<ETK_TREENODE_TYPE>(_data));
+			}
+		private:
+			ememory::WeakPtr<TreeNode<ETK_TREENODE_TYPE>> m_parent;
+		public:
+			ememory::SharedPtr<TreeNode<ETK_TREENODE_TYPE>> getParent() const {
+				return m_parent.lock();
+			}
+			void setParent(const ememory::SharedPtr<TreeNode<ETK_TREENODE_TYPE>>& _parent) {
+				if (_parent == m_parent.lock()) {
+					return;
+				}
+				if (m_parent != null) {
+					ETK_THROW_EXCEPTION(etk::exception::RuntimeError("Set a treeNode parrent on an already used treeNode"));
+				}
+				m_parent = _parent;
+			}
+			bool haveParent() const {
+				if (getParent() == null) {
+					return false;
+				}
+				return true;
+			}
+		public:
+			using Childs = etk::Vector<ememory::SharedPtr<TreeNode>>;
+		private:
+			Childs m_childs; //!< List of child in this node
+		public:
+			/**
+			 * @brief Get child list.
+			 * @return The child inteface.
+			 */
+			const Childs& getChilds() const {
+				return m_childs;
+			}
+			Childs& getChilds() {
+				return m_childs;
+			}
+			void addChild(ememory::SharedPtr<TreeNode> _child) {
+				if (_child == null) {
+					return;
+				}
+				for (auto& it: m_childs) {
+					if (it == _child) {
+						return;
+					}
+				}
+				_child->setParent(ememory::EnableSharedFromThis<TreeNode<ETK_TREENODE_TYPE>>::sharedFromThis());
+				m_childs.pushBack(_child);
+			}
+			void rmChild(ememory::SharedPtr<TreeNode> _child) {
+				if (_child == null) {
+					return;
+				}
+				auto it = m_childs.begin();
+				while (it != m_childs.end()) {
+					if (*it == _child) {
+						it->setParent(null);
+						m_childs.erase(it);
+						return;
+					}
+					++it;
+				}
+				ETK_THROW_EXCEPTION(etk::exception::RuntimeError("Remove treeNode child that does not exist"));
+			}
+			void clear() {
+				for (auto& it: m_childs) {
+					it.setParent(null);
+				}
+				m_childs.clear();
+			}
+			bool haveChild() const {
+				return m_childs.size() != 0;
+			}
+			size_t countChild() const {
+				return m_childs.size();
+			}
+		private:
+			ETK_TREENODE_TYPE m_data;
+		public:
+			const ETK_TREENODE_TYPE& getData() const {
+				return m_data;
+			}
+			ETK_TREENODE_TYPE& getData() {
+				return m_data;
+			}
+		public:
+			using ConditionFunction = etk::Function<bool(const TreeNode&)>;
+			etk::Vector<ememory::SharedPtr<TreeNode>> findIf(const ConditionFunction& findCondition) const {
+				etk::Vector<ememory::SharedPtr<TreeNode>> out;
+				if (findCondition(*this) == true) {
+					out.pushBack(ememory::EnableSharedFromThis<TreeNode<ETK_TREENODE_TYPE>>::sharedFromThis());
+				}
+				for (auto& it: m_childs) {
+					auto ret = it->findIf(findCondition);
+					for (auto& element: ret) {
+						out.pushBack(element);
+					}
+				}
+				return out;
+			}
+	};
+}
+
diff --git a/lutin_etk-base.py b/lutin_etk-base.py
index c7cac54..799bfc4 100644
--- a/lutin_etk-base.py
+++ b/lutin_etk-base.py
@@ -58,7 +58,7 @@ def configure(target, my_module):
 	    'etk/Function.hpp',
 	    'etk/NullPtr.hpp',
 	    'etk/typeInfo.hpp',
-	    'etk/Exception.hpp',
+	    'etk/Exception.hpp'
 	    ])
 	
 	# build in C++ mode
diff --git a/lutin_etk.py b/lutin_etk.py
index 14abe1b..4a4c09d 100644
--- a/lutin_etk.py
+++ b/lutin_etk.py
@@ -69,7 +69,10 @@ def configure(target, my_module):
 	    'etk/os/FSNode.hpp',
 	    'etk/os/FSNodeRight.hpp',
 	    'etk/archive/Archive.hpp',
-	    'etk/archive/Zip.hpp'])
+	    'etk/archive/Zip.hpp',
+	    'etk/TreeNode.hpp',
+	    'etk/FlatTree.hpp',
+	    ])
 	
 	# build in C++ mode
 	my_module.compile_version("c++", 2011)