diff --git a/args.py b/args.py
new file mode 100644
index 0000000..ac95a5c
--- /dev/null
+++ b/args.py
@@ -0,0 +1,398 @@
+# -*- coding: utf-8 -*-
+
+"""
+args
+~~~~
+
+This module provides the CLI argument interface for clint.
+
+"""
+
+import os
+from sys import argv
+from glob import glob
+from collections import OrderedDict
+
+def _expand_path(path):
+    """Expands directories and globs in given path."""
+
+    paths = []
+    path = os.path.expanduser(path)
+    path = os.path.expandvars(path)
+
+    if os.path.isdir(path):
+
+        for (dir, dirs, files) in os.walk(path):
+            for file in files:
+                paths.append(os.path.join(dir, file))
+    else:
+        paths.extend(glob(path))
+
+    return paths
+
+
+def _is_collection(obj):
+    """Tests if an object is a collection. Strings don't count."""
+
+    if isinstance(obj, basestring):
+        return False
+
+    return hasattr(obj, '__getitem__')
+
+
+
+class ArgsList(object):
+    """CLI Argument management."""
+
+    def __init__(self, args=None, no_argv=False):
+        if not args:
+            if not no_argv:
+                self._args = argv[1:]
+            else:
+                self._args = []
+        else:
+            self._args = args
+
+
+    def __len__(self):
+        return len(self._args)
+
+
+    def __repr__(self):
+        return '<args %s>' % (repr(self._args))
+
+
+    def __getitem__(self, i):
+        try:
+            return self.all[i]
+        except IndexError:
+            return None
+
+
+    def __contains__(self, x):
+        return self.first(x) is not None
+
+
+    def get(self, x):
+        """Returns argument at given index, else none."""
+        try:
+            return self.all[x]
+        except IndexError:
+            return None
+
+
+    def get_with(self, x):
+        """Returns first argument that contains given string."""
+        return self.all[self.first_with(x)]
+
+
+    def remove(self, x):
+        """Removes given arg (or list thereof) from Args object."""
+
+        def _remove(x):
+            found = self.first(x)
+            if found is not None:
+                self._args.pop(found)
+
+        if _is_collection(x):
+            for item in x:
+                _remove(x)
+        else:
+            _remove(x)
+
+
+    def pop(self, x):
+        """Removes and Returns value at given index, else none."""
+        try:
+            return self._args.pop(x)
+        except IndexError:
+            return None
+
+
+    def any_contain(self, x):
+        """Tests if given string is contained in any stored argument."""
+
+        return bool(self.first_with(x))
+
+
+    def contains(self, x):
+        """Tests if given object is in arguments list.
+           Accepts strings and lists of strings."""
+
+        return self.__contains__(x)
+
+
+    def first(self, x):
+        """Returns first found index of given value (or list of values)"""
+
+        def _find( x):
+            try:
+                return self.all.index(str(x))
+            except ValueError:
+                return None
+
+        if _is_collection(x):
+            for item in x:
+                found = _find(item)
+                if found is not None:
+                    return found
+            return None
+        else:
+            return _find(x)
+
+
+    def first_with(self, x):
+        """Returns first found index containing value (or list of values)"""
+
+        def _find(x):
+            try:
+                for arg in self.all:
+                    if x in arg:
+                        return self.all.index(arg)
+            except ValueError:
+                return None
+
+        if _is_collection(x):
+            for item in x:
+                found = _find(item)
+                if found:
+                    return found
+            return None
+        else:
+            return _find(x)
+
+
+    def first_without(self, x):
+        """Returns first found index not containing value (or list of values)"""
+
+        def _find(x):
+            try:
+                for arg in self.all:
+                    if x not in arg:
+                        return self.all.index(arg)
+            except ValueError:
+                return None
+
+        if _is_collection(x):
+            for item in x:
+                found = _find(item)
+                if found:
+                    return found
+            return None
+        else:
+            return _find(x)
+
+
+    def start_with(self, x):
+           """Returns all arguments beginning with given string (or list thereof)"""
+
+           _args = []
+
+           for arg in self.all:
+               if _is_collection(x):
+                   for _x in x:
+                       if arg.startswith(x):
+                           _args.append(arg)
+                           break
+               else:
+                   if arg.startswith(x):
+                       _args.append(arg)
+
+           return ArgsList(_args, no_argv=True)
+
+
+    def contains_at(self, x, index):
+        """Tests if given [list of] string is at given index."""
+
+        try:
+            if _is_collection(x):
+                for _x in x:
+                    if (_x in self.all[index]) or (_x == self.all[index]):
+                        return True
+                    else:
+                        return False
+            else:
+                return (x in self.all[index])
+
+        except IndexError:
+            return False
+
+
+    def has(self, x):
+        """Returns true if argument exists at given index.
+           Accepts: integer.
+        """
+
+        try:
+            self.all[x]
+            return True
+        except IndexError:
+            return False
+
+
+    def value_after(self, x):
+        """Returns value of argument after given found argument (or list thereof)."""
+
+        try:
+            try:
+                i = self.all.index(x)
+            except ValueError:
+                return None
+
+            return self.all[i + 1]
+
+        except IndexError:
+            return None
+
+
+    @property
+    def grouped(self):
+        """Extracts --flag groups from argument list.
+           Returns {format: Args, ...}
+        """
+
+        collection = OrderedDict(_=ArgsList(no_argv=True))
+
+        _current_group = None
+
+        for arg in self.all:
+            if arg.startswith('-'):
+                _current_group = arg
+                collection.setdefault(arg, ArgsList(no_argv=True))
+            else:
+                if _current_group:
+                    collection[_current_group]._args.append(arg)
+                else:
+                    collection['_']._args.append(arg)
+
+        return collection
+
+
+    @property
+    def last(self):
+        """Returns last argument."""
+
+        try:
+            return self.all[-1]
+        except IndexError:
+            return None
+
+
+    @property
+    def all(self):
+        """Returns all arguments."""
+
+        return self._args
+
+
+    def all_with(self, x):
+        """Returns all arguments containing given string (or list thereof)"""
+
+        _args = []
+
+        for arg in self.all:
+            if _is_collection(x):
+                for _x in x:
+                    if _x in arg:
+                        _args.append(arg)
+                        break
+            else:
+                if x in arg:
+                    _args.append(arg)
+
+        return ArgsList(_args, no_argv=True)
+
+
+    def all_without(self, x):
+        """Returns all arguments not containing given string (or list thereof)"""
+
+        _args = []
+
+        for arg in self.all:
+            if _is_collection(x):
+                for _x in x:
+                    if _x not in arg:
+                        _args.append(arg)
+                        break
+            else:
+                if x not in arg:
+                    _args.append(arg)
+
+        return ArgsList(_args, no_argv=True)
+
+
+    @property
+    def flags(self):
+        """Returns Arg object including only flagged arguments."""
+
+        return self.start_with('-')
+
+
+    @property
+    def not_flags(self):
+        """Returns Arg object excluding flagged arguments."""
+
+        return self.all_without('-')
+
+
+    @property
+    def files(self, absolute=False):
+        """Returns an expanded list of all valid paths that were passed in."""
+
+        _paths = []
+
+        for arg in self.all:
+            for path in _expand_path(arg):
+                if os.path.exists(path):
+                    if absolute:
+                        _paths.append(os.path.abspath(path))
+                    else:
+                        _paths.append(path)
+
+        return _paths
+
+
+    @property
+    def not_files(self):
+        """Returns a list of all arguments that aren't files/globs."""
+
+        _args = []
+
+        for arg in self.all:
+            if not len(_expand_path(arg)):
+                if not os.path.exists(arg):
+                    _args.append(arg)
+
+        return ArgsList(_args, no_argv=True)
+
+    @property
+    def copy(self):
+        """Returns a copy of Args object for temporary manipulation."""
+
+        return ArgsList(self.all)
+
+
+args = ArgsList()
+get = args.get
+get_with = args.get_with
+remove = args.remove
+pop = args.pop
+any_contain = args.any_contain
+contains = args.contains
+first = args.first
+first_with = args.first_with
+first_without = args.first_without
+start_with = args.start_with
+contains_at = args.contains_at
+has = args.has
+value_after = args.value_after
+grouped = args.grouped
+last = args.last
+all = args.all
+all_with = args.all_with
+all_without = args.all_without
+flags = args.flags
+not_flags = args.not_flags
+files = args.files
+not_files = args.not_files
+copy = args.copy
\ No newline at end of file