diff --git a/gale/context/Context.cpp b/gale/context/Context.cpp
index 057fef0..830b12a 100644
--- a/gale/context/Context.cpp
+++ b/gale/context/Context.cpp
@@ -10,7 +10,7 @@
 #include <etk/etk.hpp>
 
 #include <etk/tool.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <ethread/tools.hpp>
 #include <ethread/Mutex.hpp>
 
@@ -26,6 +26,9 @@
 #include <echrono/Time.hpp>
 #include <etk/typeInfo.hpp>
 #include <etk/Allocator.hpp>
+#include <etk/uri/provider/ProviderFile.hpp>
+#include <etk/theme/theme.hpp>
+
 ETK_DECLARE_TYPE(gale::Context);
 
 /**
@@ -165,18 +168,19 @@ void gale::Context::setArchiveDir(int _mode, const char* _str, const char* _appl
 	switch(_mode) {
 		case 0:
 			GALE_DEBUG("Directory APK : path=" << _str);
-			etk::setBaseFolderData(_str, _applName);
+			etk::uri::provider::add("DATA", ememory::makeShared<etk::uri::provider::ProviderFile>(_str));
 			break;
 		case 1:
 			GALE_DEBUG("Directory mode=FILE path=" << _str);
-			etk::setBaseFolderDataUser(_str);
+			etk::uri::provider::add("USER_DATA", ememory::makeShared<etk::uri::provider::ProviderFile>(_str));
 			break;
 		case 2:
 			GALE_DEBUG("Directory mode=CACHE path=" << _str);
-			etk::setBaseFolderCache(_str);
+			etk::uri::provider::add("CACHE", ememory::makeShared<etk::uri::provider::ProviderFile>(_str));
 			break;
 		case 3:
 			GALE_DEBUG("Directory mode=EXTERNAL_CACHE path=" << _str);
+			etk::uri::provider::add("EXTERNAL_CACHE", ememory::makeShared<etk::uri::provider::ProviderFile>(_str));
 			break;
 		default:
 			GALE_DEBUG("Directory mode=???? path=" << _str);
@@ -216,13 +220,10 @@ namespace gale {
 	};
 }
 
-
-
-
 gale::Context::Context(gale::Application* _application, int32_t _argc, const char* _argv[]) :
   m_application(_application),
   m_simulationActive(false),
-  m_simulationFile("gale.gsim"),
+  m_simulationUri(etk::Path("gale.gsim")),
   //m_objectManager(*this),
   m_previousDisplayTime(),
   // TODO : m_input(*this),
@@ -253,12 +254,13 @@ gale::Context::Context(gale::Application* _application, int32_t _argc, const cha
 	// By default we set 2 themes (1 color and 1 shape ...) :
 	etk::theme::setNameDefault("GUI", "shape/square/");
 	etk::theme::setNameDefault("COLOR", "color/black/");
+	
 	// parse the debug level:
 	for(int32_t iii=0; iii<m_commandLine.size(); ++iii) {
 		if (m_commandLine.get(iii) == "--gale-fps") {
 			m_displayFps=true;
 		} else if (etk::start_with(m_commandLine.get(iii), "--gale-simulation-file=") == true) {
-			m_simulationFile.setName(etk::String(m_commandLine.get(iii).begin()+23, m_commandLine.get(iii).end()) );
+			m_simulationUri = etk::Path(etk::String(m_commandLine.get(iii).begin()+23, m_commandLine.get(iii).end()) );
 		} else if (m_commandLine.get(iii) == "--gale-simulation-record") {
 			m_simulationActive = true;
 		} else if (etk::start_with(m_commandLine.get(iii), "--gale-backend=") == true) {
@@ -330,13 +332,17 @@ gale::Context::Context(gale::Application* _application, int32_t _argc, const cha
 	// request the init of the application in the main context of openGL ...
 	if (m_simulationActive == true) {
 		// in simulation case:
-		if (m_simulationFile.fileOpenWrite() == false) {
-			GALE_CRITICAL("Can not create Simulation file : " << m_simulationFile);
+		m_simulationFile = etk::uri::get(m_simulationUri);
+		if (m_simulationFile == null) {
+			GALE_CRITICAL("Can not create Simulation file : " << m_simulationUri);
+		}
+		if (m_simulationFile->open(etk::io::OpenMode::Write) == false) {
+			GALE_CRITICAL("Can not create Simulation file : " << m_simulationUri);
 			m_simulationActive = false;
 		} else {
-			m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-			m_simulationFile.filePuts(":INIT");
-			m_simulationFile.filePuts("\n");
+			m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+			m_simulationFile->puts(":INIT");
+			m_simulationFile->puts("\n");
 		}
 	}
 	#if defined(__GALE_ANDROID_ORIENTATION_LANDSCAPE__)
@@ -411,14 +417,14 @@ gale::Context::~Context() {
 	GALE_INFO(" == > Gale system Un-Init (END)");
 	if (m_simulationActive == true) {
 		// in simulation case:
-		m_simulationFile.fileClose();
+		m_simulationFile->close();
 	}
 }
 
 void gale::Context::requestUpdateSize() {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":RECALCULATE_SIZE\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":RECALCULATE_SIZE\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([](gale::Context& _context){
@@ -434,10 +440,10 @@ void gale::Context::OS_Resize(const vec2& _size) {
 	// TODO : Better in the thread ...  ==> but generate some init error ...
 	gale::Dimension::setPixelWindowsSize(_size);
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":RESIZE:");
-		m_simulationFile.filePuts(etk::toString(_size));
-		m_simulationFile.filePuts("\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":RESIZE:");
+		m_simulationFile->puts(etk::toString(_size));
+		m_simulationFile->puts("\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([_size](gale::Context& _context){
@@ -487,16 +493,16 @@ void gale::Context::OS_SetInput(enum gale::key::type _type,
                                 int32_t _pointerID,
                                 const vec2& _pos) {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":INPUT:");
-		m_simulationFile.filePuts(etk::toString(_type));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(_status));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(_pointerID));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(_pos));
-		m_simulationFile.filePuts("\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":INPUT:");
+		m_simulationFile->puts(etk::toString(_type));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(_status));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(_pointerID));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(_pos));
+		m_simulationFile->puts("\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([_type, _status, _pointerID, _pos](gale::Context& _context){
@@ -524,16 +530,16 @@ void gale::Context::OS_setKeyboard(const gale::key::Special& _special,
 		}
 	}
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":KEYBOARD:");
-		m_simulationFile.filePuts(etk::toString(_special));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(_type));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(_state));
-		m_simulationFile.filePuts(":");
-		m_simulationFile.filePuts(etk::toString(uint64_t(_char)));
-		m_simulationFile.filePuts("\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":KEYBOARD:");
+		m_simulationFile->puts(etk::toString(_special));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(_type));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(_state));
+		m_simulationFile->puts(":");
+		m_simulationFile->puts(etk::toString(uint64_t(_char)));
+		m_simulationFile->puts("\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([_special, _type, _state, _char](gale::Context& _context){
@@ -550,8 +556,8 @@ void gale::Context::OS_setKeyboard(const gale::key::Special& _special,
 
 void gale::Context::OS_Hide() {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":VIEW:false\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":VIEW:false\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([](gale::Context& _context){
@@ -571,8 +577,8 @@ void gale::Context::OS_Hide() {
 
 void gale::Context::OS_Show() {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":VIEW:true\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":VIEW:true\n");
 	}
 	m_msgSystem.post([](gale::Context& _context){
 		/*
@@ -592,10 +598,10 @@ void gale::Context::OS_Show() {
 
 void gale::Context::OS_ClipBoardArrive(enum gale::context::clipBoard::clipboardListe _clipboardID) {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":CLIPBOARD_ARRIVE:");
-		m_simulationFile.filePuts(etk::toString(_clipboardID));
-		m_simulationFile.filePuts("\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":CLIPBOARD_ARRIVE:");
+		m_simulationFile->puts(etk::toString(_clipboardID));
+		m_simulationFile->puts("\n");
 	}
 	ethread::RecursiveLock lock(m_mutex);
 	m_msgSystem.post([_clipboardID](gale::Context& _context){
@@ -617,10 +623,10 @@ void gale::Context::clipBoardSet(enum gale::context::clipBoard::clipboardListe _
 
 bool gale::Context::OS_Draw(bool _displayEveryTime) {
 	if (m_simulationActive == true) {
-		m_simulationFile.filePuts(etk::toString(echrono::Steady::now()));
-		m_simulationFile.filePuts(":DRAW:");
-		m_simulationFile.filePuts(etk::toString(_displayEveryTime));
-		m_simulationFile.filePuts("\n");
+		m_simulationFile->puts(etk::toString(echrono::Steady::now()));
+		m_simulationFile->puts(":DRAW:");
+		m_simulationFile->puts(etk::toString(_displayEveryTime));
+		m_simulationFile->puts("\n");
 	}
 	{
 		static int32_t countMemeCheck = 0;
diff --git a/gale/context/Context.hpp b/gale/context/Context.hpp
index 2a3744d..73b33e2 100644
--- a/gale/context/Context.hpp
+++ b/gale/context/Context.hpp
@@ -6,7 +6,7 @@
 #pragma once
 
 #include <etk/os/Fifo.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <gale/debug.hpp>
 #include <gale/gale.hpp>
 #include <gale/key/key.hpp>
@@ -73,7 +73,8 @@ namespace gale {
 		protected:
 			// simulation area:
 			bool m_simulationActive;
-			etk::FSNode m_simulationFile;
+			etk::Uri m_simulationUri;
+			ememory::SharedPtr<etk::io::Interface> m_simulationFile;
 		private:
 			echrono::Steady m_previousDisplayTime;  // this is to limit framerate ... in case...
 			etk::Fifo<etk::Function<void(gale::Context& _context)> > m_msgSystem;
diff --git a/gale/context/IOs/Context.cpp b/gale/context/IOs/Context.cpp
index 7ec6011..691b6ea 100644
--- a/gale/context/IOs/Context.cpp
+++ b/gale/context/IOs/Context.cpp
@@ -10,7 +10,7 @@
 #include <gale/key/key.hpp>
 #include <gale/context/commandLine.hpp>
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 
 #include <gale/resource/Manager.hpp>
 #include <gale/context/Context.hpp>
diff --git a/gale/context/MacOs/Context.mm b/gale/context/MacOs/Context.mm
index 1fc5d62..6c5af5b 100644
--- a/gale/context/MacOs/Context.mm
+++ b/gale/context/MacOs/Context.mm
@@ -11,7 +11,7 @@
 #include <gale/context/commandLine.hpp>
 #include <gale/context/clipBoard.hpp>
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 
 #include <gale/resource/Manager.hpp>
 #include <gale/context/Context.hpp>
diff --git a/gale/context/SDL/Context.cpp b/gale/context/SDL/Context.cpp
index 21ce997..7b2ccd1 100644
--- a/gale/context/SDL/Context.cpp
+++ b/gale/context/SDL/Context.cpp
@@ -11,7 +11,7 @@ extern "C" {
 }
 
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <etk/tool.hpp>
 
 #include <gale/debug.hpp>
diff --git a/gale/context/Windows/Context.cpp b/gale/context/Windows/Context.cpp
index 6275e3b..5a9c176 100644
--- a/gale/context/Windows/Context.cpp
+++ b/gale/context/Windows/Context.cpp
@@ -7,7 +7,7 @@
 #include <gale/gale.hpp>
 #include <gale/Dimension.hpp>
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 
 #include <etk/math/Vector2D.hpp>
 #include <etk/math/Vector3D.hpp>
diff --git a/gale/context/X11/Context.cpp b/gale/context/X11/Context.cpp
index de19078..fd4b559 100644
--- a/gale/context/X11/Context.cpp
+++ b/gale/context/X11/Context.cpp
@@ -11,7 +11,7 @@ extern "C" {
 }
 
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <etk/tool.hpp>
 
 #include <gale/debug.hpp>
diff --git a/gale/context/simulation/Context.cpp b/gale/context/simulation/Context.cpp
index dc553db..c9d70a5 100644
--- a/gale/context/simulation/Context.cpp
+++ b/gale/context/simulation/Context.cpp
@@ -11,7 +11,7 @@ extern "C" {
 }
 
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <etk/tool.hpp>
 
 #include <gale/debug.hpp>
@@ -75,15 +75,17 @@ class SimulationInterface : public gale::Context {
 		}
 		
 		int32_t run() {
+			m_simulationFile = etk::uri::get(m_simulationUri);
 			// Try to open the file of simulation:
-			if (m_simulationFile.fileOpenRead() == false) {
+			if (    m_simulationFile == null
+			     || m_simulationFile->open(etk::io::OpenMode::Read) == false) {
 				GALE_ERROR("can not open the simulation file");
 				return -1;
 			}
 			etk::String action;
 			// main cycle
 			while(m_run == true) {
-				bool lineIsOk = m_simulationFile.fileGets(action);
+				bool lineIsOk = m_simulationFile->gets(action);
 				if (lineIsOk == false) {
 					// reach end of simulation file;
 					return 0;
@@ -156,7 +158,7 @@ class SimulationInterface : public gale::Context {
 					GALE_ERROR("unknow event : '" << localAction << "'");
 				}
 			}
-			m_simulationFile.fileClose();
+			m_simulationFile->close();
 			return 0;
 		}
 		/****************************************************************************************/
diff --git a/gale/context/wayland/Context.cpp b/gale/context/wayland/Context.cpp
index 7ead184..33ae4ee 100644
--- a/gale/context/wayland/Context.cpp
+++ b/gale/context/wayland/Context.cpp
@@ -18,7 +18,7 @@ extern "C" {
 	#include <errno.h>
 }
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <etk/tool.hpp>
 
 #include <gale/debug.hpp>
diff --git a/gale/gale.cpp b/gale/gale.cpp
index 0064b47..f38f293 100644
--- a/gale/gale.cpp
+++ b/gale/gale.cpp
@@ -8,7 +8,7 @@
 #include <gale/context/Context.hpp>
 
 #include <gale/context/commandLine.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <gale/Dimension.hpp>
 
 #ifndef GALE_VERSION
diff --git a/gale/resource/Program.cpp b/gale/resource/Program.cpp
index 5aa3fd5..431d23e 100644
--- a/gale/resource/Program.cpp
+++ b/gale/resource/Program.cpp
@@ -8,7 +8,7 @@
 #include <gale/debug.hpp>
 #include <gale/resource/Program.hpp>
 #include <gale/resource/Manager.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <gale/gale.hpp>
 #include <gale/renderer/openGL/openGL-include.hpp>
 #include <etk/typeInfo.hpp>
@@ -27,50 +27,49 @@ gale::resource::Program::Program() :
 	m_resourceLevel = 1;
 }
 
-void gale::resource::Program::init(const etk::String& _filename) {
-	gale::Resource::init(_filename);
+void gale::resource::Program::init(const etk::Uri& _uri) {
+	gale::Resource::init(_uri.get());
 	ethread::RecursiveLock lock(m_mutex);
-	GALE_DEBUG("OGL : load PROGRAM '" << m_name << "'");
+	GALE_DEBUG("OGL : load PROGRAM '" << _uri << "'");
 	// load data from file "all the time ..."
 	
-	etk::FSNode file(m_name);
-	if (file.exist() == false) {
-		GALE_DEBUG("File does not Exist : \"" << file << "\"  == > automatic load of framment and shader with same names... ");
-		etk::String tmpFilename = m_name;
-		// remove extention ...
-		tmpFilename.erase(tmpFilename.size()-4, 4);
-		ememory::SharedPtr<gale::resource::Shader> tmpShader = gale::resource::Shader::create(tmpFilename+"vert");
+	if (etk::uri::exist(_uri) == false) {
+		GALE_DEBUG("File does not Exist : \"" << _uri << "\"  == > automatic load of framment and shader with same names... ");
+		etk::Uri tmpUri = _uri;
+		tmpUri.setPath(_uri.getPath().getExtentionRemoved() + ".vert");
+		ememory::SharedPtr<gale::resource::Shader> tmpShader = gale::resource::Shader::create(tmpUri.get());
 		if (tmpShader == null) {
-			GALE_ERROR("Error while getting a specific shader filename : " << tmpFilename);
+			GALE_ERROR("Error while getting a specific shader filename : " << tmpUri);
 			return;
 		} else {
-			GALE_DEBUG("Add shader on program : "<< tmpFilename << "vert");
+			GALE_DEBUG("Add shader on program : "<< tmpUri << "vert");
 			m_shaderList.pushBack(tmpShader);
 		}
-		tmpShader = gale::resource::Shader::create(tmpFilename+"frag");
+		tmpUri.setPath(_uri.getPath().getExtentionRemoved() + ".frag");
+		tmpShader = gale::resource::Shader::create(tmpUri.get());
 		if (tmpShader == null) {
-			GALE_ERROR("Error while getting a specific shader filename : " << tmpFilename);
+			GALE_ERROR("Error while getting a specific shader filename : " << tmpUri);
 			return;
 		} else {
-			GALE_DEBUG("Add shader on program : "<< tmpFilename << "frag");
+			GALE_DEBUG("Add shader on program : "<< tmpUri << "frag");
 			m_shaderList.pushBack(tmpShader);
 		}
 	} else {
-		etk::String fileExtention = file.fileGetExtention();
-		if (fileExtention != "prog") {
-			GALE_ERROR("File does not have extention \".prog\" for program but : \"" << fileExtention << "\"");
+		if (_uri.getPath().getExtention() != "prog") {
+			GALE_ERROR("File does not have extention \".prog\" for program but : \"" << _uri.getPath() << "\"");
 			return;
 		}
-		if (file.fileOpenRead() == false) {
-			GALE_ERROR("Can not open the file : \"" << file << "\"");
+		auto fileIO = etk::uri::get(_uri);
+		if (    fileIO == null
+		     || fileIO->open(etk::io::OpenMode::Read) == false) {
+			GALE_ERROR("Can not open the file : \"" << _uri << "\"");
 			return;
 		}
-		#define MAX_LINE_SIZE   (2048)
-		char tmpData[MAX_LINE_SIZE];
-		while (file.fileGets(tmpData, MAX_LINE_SIZE) != null) {
-			int32_t len = strlen(tmpData);
+		etk::String tmpData;
+		while (fileIO->gets(tmpData) != false) {
+			int32_t len = tmpData.size();
 			if(    tmpData[len-1] == '\n'
-				|| tmpData[len-1] == '\r') {
+			    || tmpData[len-1] == '\r') {
 				tmpData[len-1] = '\0';
 				len--;
 			}
@@ -81,19 +80,19 @@ void gale::resource::Program::init(const etk::String& _filename) {
 			if (tmpData[0] == '#') {
 				continue;
 			}
-			// get it with relative position :
-			etk::String tmpFilename = file.getRelativeFolder() + tmpData;
-			ememory::SharedPtr<gale::resource::Shader> tmpShader = gale::resource::Shader::create(tmpFilename);
+			// get it with relative position:
+			etk::Uri tmpUri = _uri;
+			tmpUri.setPath(_uri.getPath().getParent() / tmpData);
+			ememory::SharedPtr<gale::resource::Shader> tmpShader = gale::resource::Shader::create(tmpUri.get());
 			if (tmpShader == null) {
-				GALE_ERROR("Error while getting a specific shader filename : " << tmpFilename);
+				GALE_ERROR("Error while getting a specific shader filename : " << tmpUri);
 			} else {
-				GALE_DEBUG("Add shader on program : "<< tmpFilename);
+				GALE_DEBUG("Add shader on program : "<< tmpUri);
 				m_shaderList.pushBack(tmpShader);
 			}
-			
 		}
 		// close the file:
-		file.fileClose();
+		fileIO->close();
 	}
 	if (gale::openGL::hasContext() == true) {
 		updateContext();
diff --git a/gale/resource/Program.hpp b/gale/resource/Program.hpp
index 1a21424..eaeaae3 100644
--- a/gale/resource/Program.hpp
+++ b/gale/resource/Program.hpp
@@ -12,6 +12,7 @@
 #include <gale/resource/Shader.hpp>
 #include <gale/resource/VirtualBufferObject.hpp>
 #include <etk/Color.hpp>
+#include <etk/uri/uri.hpp>
 
 namespace gale {
 	namespace resource {
@@ -57,10 +58,10 @@ namespace gale {
 			protected:
 				/**
 				 * @brief Contructor of an opengl Program.
-				 * @param[in] filename Standard file name format. see @ref etk::FSNode
+				 * @param[in] _uri Uri of the file
 				 */
 				Program();
-				void init(const etk::String& _filename);
+				void init(const etk::Uri& _uri);
 			public:
 				DECLARE_RESOURCE_NAMED_FACTORY(Program);
 				/**
diff --git a/gale/resource/Resource.cpp b/gale/resource/Resource.cpp
index 7597a42..d8b0a41 100644
--- a/gale/resource/Resource.cpp
+++ b/gale/resource/Resource.cpp
@@ -32,6 +32,11 @@ void gale::Resource::init(const etk::String& _name) {
 	m_name = _name;
 }
 
+void gale::Resource::init(const etk::Uri& _uri) {
+	m_resourceHasBeenInit=true;
+	m_name = _uri.get();
+}
+
 const char * const gale::Resource::getType() {
 	if (m_listType.size() == 0) {
 		return "gale::Resource";
diff --git a/gale/resource/Resource.hpp b/gale/resource/Resource.hpp
index 1b4183f..d84256d 100644
--- a/gale/resource/Resource.hpp
+++ b/gale/resource/Resource.hpp
@@ -9,6 +9,7 @@
 #include <ethread/MutexRecursive.hpp>
 #include <ememory/memory.hpp>
 #include <etk/types.hpp>
+#include <etk/uri/uri.hpp>
 #include <gale/debug.hpp>
 
 #define MAX_RESOURCE_LEVEL (5)
@@ -32,7 +33,7 @@
 	template<typename ... GALE_TYPE> static ememory::SharedPtr<className> create(const etk::String& _name, GALE_TYPE&& ... _all ) { \
 		ememory::SharedPtr<className> resource; \
 		ememory::SharedPtr<gale::Resource> resource2; \
-		if (_name != "" && _name != "---") { \
+		if (_name.isEmpty() == false && _name != "---") { \
 			resource2 = getManager().localKeep(_name); \
 		} \
 		if (resource2 != null) { \
@@ -56,6 +57,35 @@
 		return resource; \
 	}
 
+#define DECLARE_RESOURCE_URI_FACTORY(className) \
+	template<typename ... GALE_TYPE> static ememory::SharedPtr<className> create(const etk::Uri& _uri, GALE_TYPE&& ... _all ) { \
+		ememory::SharedPtr<className> resource; \
+		ememory::SharedPtr<gale::Resource> resource2; \
+		etk::String name = _uri.get(); \
+		if (name.isEmpty() == false && name != "---") { \
+			resource2 = getManager().localKeep(name); \
+		} \
+		if (resource2 != null) { \
+			resource = ememory::dynamicPointerCast<className>(resource2); \
+			if (resource == null) { \
+				GALE_CRITICAL("Request resource file : '" << name << "' With the wrong type (dynamic cast error)"); \
+				return null; \
+			} \
+			return resource; \
+		} \
+		resource = ememory::SharedPtr<className>(ETK_NEW(className)); \
+		if (resource == null) { \
+			GALE_ERROR("allocation error of a resource : " << name); \
+			return null; \
+		} \
+		resource->init(_uri, etk::forward<GALE_TYPE>(_all)... ); \
+		if (resource->resourceHasBeenCorectlyInit() == false) { \
+			GALE_CRITICAL("resource Is not correctly init : " << #className ); \
+		} \
+		getManager().localAdd(resource); \
+		return resource; \
+	}
+
 #define DECLARE_RESOURCE_SINGLE_FACTORY(className,uniqueName) \
 	template<typename ... GALE_TYPE> static ememory::SharedPtr<className> create(GALE_TYPE&& ... _all ) { \
 		ememory::SharedPtr<className> resource; \
@@ -107,10 +137,13 @@ namespace gale {
 			/**
 			 * @brief Initialisation of the class and previous classes.
 			 * @param[in] _name Name of the resource.
+			 * @param[in] _uri Uri of the resource.
 			 */
 			void init();
 			//! @previous
 			void init(const etk::String& _name);
+			//! @previous
+			void init(const etk::Uri& _uri);
 		public:
 			//! geenric destructor
 			virtual ~Resource() {
diff --git a/gale/resource/Shader.cpp b/gale/resource/Shader.cpp
index a3f75c8..7db748b 100644
--- a/gale/resource/Shader.cpp
+++ b/gale/resource/Shader.cpp
@@ -5,7 +5,7 @@
  */
 
 #include <etk/types.hpp>
-#include <etk/os/FSNode.hpp>
+#include <etk/uri/uri.hpp>
 #include <gale/debug.hpp>
 #include <gale/resource/Shader.hpp>
 #include <gale/resource/Manager.hpp>
@@ -25,18 +25,18 @@ gale::resource::Shader::Shader() :
 	m_resourceLevel = 0;
 }
 
-void gale::resource::Shader::init(const etk::String& _filename) {
+void gale::resource::Shader::init(const etk::Uri& _uri) {
 	ethread::RecursiveLock lock(m_mutex);
-	gale::Resource::init(_filename);
-	GALE_DEBUG("OGL : load SHADER '" << _filename << "'");
+	gale::Resource::init(_uri.get());
+	GALE_DEBUG("OGL : load SHADER '" << _uri << "'");
 	// load data from file "all the time ..."
 	
-	if (etk::end_with(m_name, ".frag") == true) {
+	if (_uri.getPath().getExtention() == "frag") {
 		m_type = gale::openGL::shader::type::fragment;
-	} else if (etk::end_with(m_name, ".vert") == true) {
+	} else if (_uri.getPath().getExtention() == "vert") {
 		m_type = gale::openGL::shader::type::vertex;
 	} else {
-		GALE_ERROR("File does not have extention \".vert\" for Vertex Shader or \".frag\" for Fragment Shader. but : \"" << m_name << "\"");
+		GALE_ERROR("File does not have extention \".vert\" for Vertex Shader or \".frag\" for Fragment Shader. but : \"" << _uri << "\"");
 		return;
 	}
 	reload();
@@ -101,27 +101,13 @@ void gale::resource::Shader::removeContextToLate() {
 
 void gale::resource::Shader::reload() {
 	ethread::RecursiveLock lock(m_mutex);
-	etk::FSNode file(m_name);
-	if (false == file.exist()) {
-		GALE_CRITICAL("File does not Exist : '" << file << "' : '" << file.getFileSystemName() << "'");
+	etk::Uri uri = m_name;
+	if (etk::uri::exist(uri)) {
+		GALE_CRITICAL("File does not Exist : '" << uri << "' : path='" << uri.getPath() << "'");
 		return;
 	}
-	
-	int64_t fileSize = file.fileSize();
-	if (0 == fileSize) {
-		GALE_CRITICAL("This file is empty : " << file);
-		return;
-	}
-	if (false == file.fileOpenRead()) {
-		GALE_CRITICAL("Can not open the file : " << file);
-		return;
-	}
-	m_fileData = file.fileReadAllString();
-	// close the file:
-	file.fileClose();
-	
+	etk::uri::readAll(uri, m_fileData);
 	// now change the OGL context ...
-	
 	if (gale::openGL::hasContext() == true) {
 		GALE_DEBUG("OGL : load SHADER '" << m_name << "' ==> call update context (direct)");
 		removeContext();
diff --git a/gale/resource/Shader.hpp b/gale/resource/Shader.hpp
index 16c1edb..ce7ab18 100644
--- a/gale/resource/Shader.hpp
+++ b/gale/resource/Shader.hpp
@@ -9,6 +9,7 @@
 #include <gale/debug.hpp>
 #include <gale/renderer/openGL/openGL.hpp>
 #include <gale/resource/Resource.hpp>
+#include <etk/uri/uri.hpp>
 
 namespace gale {
 	namespace resource {
@@ -28,7 +29,7 @@ namespace gale {
 				 */
 				Shader();
 			public:
-				void init(const etk::String& _filename);
+				void init(const etk::Uri& _uri);
 				DECLARE_RESOURCE_NAMED_FACTORY(Shader);
 				/**
 				 * @brief Destructor, remove the current Shader