diff --git a/pycrc/models.py b/pycrc/models.py
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+++ b/pycrc/models.py
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+#  pycrc -- parameterisable CRC calculation utility and C source code generator
+#
+#  Copyright (c) 2006-2017  Thomas Pircher  <tehpeh-web@tty1.net>
+#
+#  Permission is hereby granted, free of charge, to any person obtaining a copy
+#  of this software and associated documentation files (the "Software"), to
+#  deal in the Software without restriction, including without limitation the
+#  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+#  sell copies of the Software, and to permit persons to whom the Software is
+#  furnished to do so, subject to the following conditions:
+#
+#  The above copyright notice and this permission notice shall be included in
+#  all copies or substantial portions of the Software.
+#
+#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+#  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+#  IN THE SOFTWARE.
+
+
+"""
+Collection of CRC models. This module contains the CRC models known to pycrc.
+
+To print the parameters of a particular model:
+
+    from pycrc.models import CrcModels
+
+    models = CrcModels()
+    print(", ".join(models.names()))
+    m = models.get_params("crc-32")
+    if m != None:
+        print("Width:        {width:d}".format(**m))
+        print("Poly:         {poly:#x}".format(**m))
+        print("ReflectIn:    {reflect_in}".format(**m))
+        print("XorIn:        {xor_in:#x}".format(**m))
+        print("ReflectOut:   {reflect_out}".format(**m))
+        print("XorOut:       {xor_out:#x}".format(**m))
+        print("Check:        {check:#x}".format(**m))
+    else:
+        print("model not found.")
+"""
+
+
+
+class CrcModels(object):
+    """
+    CRC Models.
+
+    All models are defined as constant class variables.
+    """
+
+    models = []
+
+    models.append({
+        'name':         'crc-5',
+        'width':         5,
+        'poly':          0x05,
+        'reflect_in':    True,
+        'xor_in':        0x1f,
+        'reflect_out':   True,
+        'xor_out':       0x1f,
+        'check':         0x19,
+    })
+    models.append({
+        'name':         'crc-8',
+        'width':         8,
+        'poly':          0x07,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0xf4,
+    })
+    models.append({
+        'name':         'dallas-1-wire',
+        'width':         8,
+        'poly':          0x31,
+        'reflect_in':    True,
+        'xor_in':        0x0,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0xa1,
+    })
+    models.append({
+        'name':         'crc-12-3gpp',
+        'width':         12,
+        'poly':          0x80f,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0xdaf,
+    })
+    models.append({
+        'name':         'crc-15',
+        'width':         15,
+        'poly':          0x4599,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0x59e,
+    })
+    models.append({
+        'name':         'crc-16',
+        'width':         16,
+        'poly':          0x8005,
+        'reflect_in':    True,
+        'xor_in':        0x0,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0xbb3d,
+    })
+    models.append({
+        'name':         'crc-16-usb',
+        'width':         16,
+        'poly':          0x8005,
+        'reflect_in':    True,
+        'xor_in':        0xffff,
+        'reflect_out':   True,
+        'xor_out':       0xffff,
+        'check':         0xb4c8,
+    })
+    models.append({
+        'name':         'crc-16-modbus',
+        'width':         16,
+        'poly':          0x8005,
+        'reflect_in':    True,
+        'xor_in':        0xffff,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0x4b37,
+    })
+    models.append({
+        'name':         'crc-16-genibus',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    False,
+        'xor_in':        0xffff,
+        'reflect_out':   False,
+        'xor_out':       0xffff,
+        'check':         0xd64e,
+    })
+    models.append({
+        'name':         'crc-16-ccitt',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    False,
+        'xor_in':        0x1d0f,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0xe5cc,
+    })
+    models.append({
+        'name':         'r-crc-16',
+        'width':         16,
+        'poly':          0x0589,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0001,
+        'check':         0x007e,
+    })
+    models.append({
+        'name':         'kermit',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    True,
+        'xor_in':        0x0,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0x2189,
+    })
+    models.append({
+        'name':         'x-25',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    True,
+        'xor_in':        0xffff,
+        'reflect_out':   True,
+        'xor_out':       0xffff,
+        'check':         0x906e,
+    })
+    models.append({
+        'name':         'xmodem',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0x31c3,
+    })
+    models.append({
+        'name':         'zmodem',
+        'width':         16,
+        'poly':          0x1021,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0x31c3,
+    })
+    models.append({
+        'name':         'crc-24',
+        'width':         24,
+        'poly':          0x864cfb,
+        'reflect_in':    False,
+        'xor_in':        0xb704ce,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0x21cf02,
+    })
+    models.append({
+        'name':         'crc-32',
+        'width':         32,
+        'poly':          0x4c11db7,
+        'reflect_in':    True,
+        'xor_in':        0xffffffff,
+        'reflect_out':   True,
+        'xor_out':       0xffffffff,
+        'check':         0xcbf43926,
+    })
+    models.append({
+        'name':         'crc-32c',
+        'width':         32,
+        'poly':          0x1edc6f41,
+        'reflect_in':    True,
+        'xor_in':        0xffffffff,
+        'reflect_out':   True,
+        'xor_out':       0xffffffff,
+        'check':         0xe3069283,
+    })
+    models.append({
+        'name':         'crc-32-mpeg',
+        'width':         32,
+        'poly':          0x4c11db7,
+        'reflect_in':    False,
+        'xor_in':        0xffffffff,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0x0376e6e7,
+    })
+    models.append({
+        'name':         'crc-32-bzip2',
+        'width':         32,
+        'poly':          0x04c11db7,
+        'reflect_in':    False,
+        'xor_in':        0xffffffff,
+        'reflect_out':   False,
+        'xor_out':       0xffffffff,
+        'check':         0xfc891918,
+    })
+    models.append({
+        'name':         'posix',
+        'width':         32,
+        'poly':          0x4c11db7,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0xffffffff,
+        'check':         0x765e7680,
+    })
+    models.append({
+        'name':         'jam',
+        'width':         32,
+        'poly':          0x4c11db7,
+        'reflect_in':    True,
+        'xor_in':        0xffffffff,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0x340bc6d9,
+    })
+    models.append({
+        'name':         'xfer',
+        'width':         32,
+        'poly':          0x000000af,
+        'reflect_in':    False,
+        'xor_in':        0x0,
+        'reflect_out':   False,
+        'xor_out':       0x0,
+        'check':         0xbd0be338,
+    })
+    models.append({
+        'name':         'crc-64',
+        'width':         64,
+        'poly':          0x000000000000001b,
+        'reflect_in':    True,
+        'xor_in':        0x0,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0x46a5a9388a5beffe,
+    })
+    models.append({
+        'name':         'crc-64-jones',
+        'width':         64,
+        'poly':          0xad93d23594c935a9,
+        'reflect_in':    True,
+        'xor_in':        0xffffffffffffffff,
+        'reflect_out':   True,
+        'xor_out':       0x0,
+        'check':         0xcaa717168609f281,
+    })
+    models.append({
+        'name':         'crc-64-xz',
+        'width':         64,
+        'poly':          0x42f0e1eba9ea3693,
+        'reflect_in':    True,
+        'xor_in':        0xffffffffffffffff,
+        'reflect_out':   True,
+        'xor_out':       0xffffffffffffffff,
+        'check':         0x995dc9bbdf1939fa,
+    })
+
+
+    def names(self):
+        """
+        This function returns the list of supported CRC models.
+        """
+        return [model['name'] for model in self.models]
+
+
+    def get_params(self, model):
+        """
+        This function returns the parameters of a given model.
+        """
+        model = model.lower()
+        for i in self.models:
+            if i['name'] == model:
+                return i
+        return None