diff --git a/lutLab/ext_1d_lut.py b/lutLab/ext_1d_lut.py
index 9b17553..0570bbe 100755
--- a/lutLab/ext_1d_lut.py
+++ b/lutLab/ext_1d_lut.py
@@ -5,6 +5,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import argparse
 from utils.ocio_helper import (
     OCIO_3D_LUTS_FORMATS, create_ocio_processor, is_3d_lut
@@ -14,6 +15,8 @@
 
 from scipy.interpolate import PchipInterpolator
 import numpy
+import sys
+from utils import debug_helper
 
 
 class Ext1DLutException(Exception):
@@ -136,6 +139,18 @@ def __get_options():
     parser.add_argument("-d", "--display",
                         help="Display result using matplotlib",
                         action="store_true")
+    # version
+    parser.add_argument('-v', "--version", action='version',
+                        version='{0} - version {1}'.format(description,
+                                                           __version__))
+    # full version
+    versions = debug_helper.get_imported_modules_versions(sys.modules,
+                                                          globals())
+    versions = '{0} - version {1}\n\n{2}'.format(description,
+                                                 __version__,
+                                                 versions)
+    parser.add_argument('-V', "--full-versions",
+                        action=debug_helper.make_full_version_action(versions))
     return parser.parse_args()
 
 if __name__ == '__main__':
diff --git a/lutLab/lut_to_lut.py b/lutLab/lut_to_lut.py
index 937846e..8cab8e2 100755
--- a/lutLab/lut_to_lut.py
+++ b/lutLab/lut_to_lut.py
@@ -5,6 +5,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import argparse
 from utils.ocio_helper import OCIO_LUTS_FORMATS, create_ocio_processor
 from utils.csp_helper import write_2d_csp_lut
@@ -14,6 +15,8 @@
 from PyOpenColorIO.Constants import (
     INTERP_LINEAR, INTERP_TETRAHEDRAL
 )
+from utils import debug_helper
+import sys
 
 
 class LutToLutException(Exception):
@@ -121,6 +124,18 @@ def __get_options():
     # inverse
     parser.add_argument("-inv", "--inverse", help="Inverse input LUT",
                         action="store_true")
+    # version
+    parser.add_argument('-v', "--version", action='version',
+                        version='{0} - version {1}'.format(description,
+                                                           __version__))
+    # full version
+    versions = debug_helper.get_imported_modules_versions(sys.modules,
+                                                          globals())
+    versions = '{0} - version {1}\n\n{2}'.format(description,
+                                                 __version__,
+                                                 versions)
+    parser.add_argument('-V', "--full-versions",
+                        action=debug_helper.make_full_version_action(versions))
     return parser.parse_args()
 
 if __name__ == '__main__':
diff --git a/lutLab/rgb_to_xyz_matrix.py b/lutLab/rgb_to_xyz_matrix.py
index f81ddcb..6ec1cff 100644
--- a/lutLab/rgb_to_xyz_matrix.py
+++ b/lutLab/rgb_to_xyz_matrix.py
@@ -1,13 +1,18 @@
+#!/usr/bin/python
+
 """ Display RGB colorspaces to XYZ conversion matrices and their inverses
 
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 from utils.colors_helper import xy_to_XYZ
 from utils.colorspaces import COLORSPACES
 from utils.private_colorspaces import PRIVATE_COLORSPACES
 import numpy
 import argparse
+import sys
+from utils import debug_helper
 
 
 class RGBToXYZMatrixException(Exception):
@@ -165,6 +170,18 @@ def __get_options():
                         type=str,
                         choices=['matrix', 'spimtx', 'simple'],
                         default='matrix')
+    # version
+    parser.add_argument('-v', "--version", action='version',
+                        version='{0} - version {1}'.format(description,
+                                                           __version__))
+    # full version
+    versions = debug_helper.get_imported_modules_versions(sys.modules,
+                                                          globals())
+    versions = '{0} - version {1}\n\n{2}'.format(description,
+                                                 __version__,
+                                                 versions)
+    parser.add_argument('-V', "--full-versions",
+                        action=debug_helper.make_full_version_action(versions))
     return parser.parse_args()
 
 
diff --git a/plotThatLut/plot_that_lut.py b/plotThatLut/plot_that_lut.py
index 61592d5..f3b2b93 100755
--- a/plotThatLut/plot_that_lut.py
+++ b/plotThatLut/plot_that_lut.py
@@ -5,7 +5,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
-
+__version__ = "0.1"
 ## imports
 import os
 # OpenColorIO
diff --git a/plotThatLut/plot_that_lut_web.py b/plotThatLut/plot_that_lut_web.py
index aeb5bac..1820dfc 100755
--- a/plotThatLut/plot_that_lut_web.py
+++ b/plotThatLut/plot_that_lut_web.py
@@ -5,7 +5,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
-
+__version__ = "Prototype"
 from os import path
 import ntpath
 import sys
diff --git a/plotThatLut/ptlut.py b/plotThatLut/ptlut.py
index 380fdd5..619dd45 100755
--- a/plotThatLut/ptlut.py
+++ b/plotThatLut/ptlut.py
@@ -5,8 +5,11 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import plot_that_lut
 import argparse
+from utils import debug_helper
+import sys
 
 
 def __get_options():
@@ -51,6 +54,18 @@ def __get_options():
         "Samples count. Ex : {0} for a curve or {1} for a cube."
     ).format(plot_that_lut.DEFAULT_SAMPLE, plot_that_lut.DEFAULT_CUBE_SIZE),
 default=None, type=int)
+    # version
+    parser.add_argument('-v', "--version", action='version',
+                        version='{0} - version {1}'.format(description,
+                                                           __version__))
+    # full version
+    versions = debug_helper.get_imported_modules_versions(sys.modules,
+                                                          globals())
+    versions = '{0} - version {1}\n\n{2}'.format(description,
+                                                 __version__,
+                                                 versions)
+    parser.add_argument('-V', "--full-versions",
+                        action=debug_helper.make_full_version_action(versions))
     ## return args
     return parser.parse_args()
 
diff --git a/utils/clcc_helper.py b/utils/clcc_helper.py
index 496c6b5..e80ca37 100644
--- a/utils/clcc_helper.py
+++ b/utils/clcc_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import datetime
 
 
diff --git a/utils/colors_helper.py b/utils/colors_helper.py
index 170a311..8a9ddd6 100644
--- a/utils/colors_helper.py
+++ b/utils/colors_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import math
 
 
diff --git a/utils/colorspaces.py b/utils/colorspaces.py
index 2eecf4f..6b223ce 100644
--- a/utils/colorspaces.py
+++ b/utils/colorspaces.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 from utils import colors_helper
 from abc import ABCMeta, abstractmethod
 import math
diff --git a/utils/csp_helper.py b/utils/csp_helper.py
index fb5a504..7a317c0 100644
--- a/utils/csp_helper.py
+++ b/utils/csp_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import itertools
 from utils.lut_utils import check_arrays_length
 
diff --git a/utils/cube_helper.py b/utils/cube_helper.py
index fde02cf..b919c2c 100644
--- a/utils/cube_helper.py
+++ b/utils/cube_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import itertools
 from utils.lut_utils import check_arrays_length
 
diff --git a/utils/debug_helper.py b/utils/debug_helper.py
new file mode 100644
index 0000000..b3d6ec9
--- /dev/null
+++ b/utils/debug_helper.py
@@ -0,0 +1,71 @@
+""" Debug helpers
+
+.. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
+
+"""
+__version__ = "0.1"
+import os
+import argparse
+import sys
+
+
+def get_imported_modules_versions(modules, glob):
+    """Return a string containing imported modules versions.
+    (It isn't intended to be exhautive)
+
+    Args:
+        modules: sys.modules
+        glob: globals()
+
+    Returns:
+        .string
+
+    """
+    # Retrieve ColorPipe-tools modules
+    path = os.path.dirname(os.path.dirname(__file__))
+    res = "ColorPipe-tools modules:\n------------------------------"
+    for name in modules:
+        if (path in str(modules[name])
+           and "debug_helper" not in str(modules[name])):
+            try:
+                res = "{0}\n{1} - version {2}".format(res, name,
+                                                      modules[name].__version__)
+            except AttributeError:
+                pass
+    # Retrieve "interesting" external modules
+    module_selection = set(modules) & set(glob)
+    res = "{0}\n\nExternal modules:\n------------------------------".format(res)
+    for name in module_selection:
+        if "built-in" not in name and path not in str(modules[name]):
+            try:
+                res = "{0}\n{1} - version {2}".format(res, name,
+                                                      modules[name].__version__)
+            except AttributeError:
+                pass
+    return res
+
+
+def make_full_version_action(version_text):
+    """Return a multi-lines version action for argparse
+
+    Args:
+        version_text (str): version text to print
+
+    Returns:
+        .argparse.Action
+
+    """
+    class FullVersionAction(argparse.Action):
+        def __init__(self, option_strings, dest=None, nargs=0, default=None,
+                     required=False, type=None, metavar=None,
+                     help=("show version number of the program and its "
+                           "dependencies. And then exit")):
+            super(FullVersionAction, self).__init__(
+                option_strings=option_strings,
+                dest=dest, nargs=nargs, default=default, required=required,
+                metavar=metavar, type=type, help=help)
+
+        def __call__(self, parser, namespace, values, option_string=None):
+            print(version_text)
+            sys.exit()
+    return FullVersionAction
diff --git a/utils/lut_utils.py b/utils/lut_utils.py
index dbd3c2c..6b9bbdc 100644
--- a/utils/lut_utils.py
+++ b/utils/lut_utils.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import os
 
 
diff --git a/utils/ocio_helper.py b/utils/ocio_helper.py
index e9c8f4d..7e0c2bd 100644
--- a/utils/ocio_helper.py
+++ b/utils/ocio_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import os
 # import OpenColorIO
 from PyOpenColorIO import (
diff --git a/utils/spi_helper.py b/utils/spi_helper.py
index 7fcaae1..10f24d3 100644
--- a/utils/spi_helper.py
+++ b/utils/spi_helper.py
@@ -3,7 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
-
+__version__ = "0.1"
 
 class SpiHelperException(Exception):
     pass
diff --git a/utils/threedl_helper.py b/utils/threedl_helper.py
index 1a06225..8cedae2 100644
--- a/utils/threedl_helper.py
+++ b/utils/threedl_helper.py
@@ -3,6 +3,7 @@
 .. moduleauthor:: `Marie FETIVEAU <github.com/mfe>`_
 
 """
+__version__ = "0.1"
 import math