diff --git a/Control/Monad/ST/Class.hs b/Control/Monad/ST/Class.hs
new file mode 100644
--- /dev/null
+++ b/Control/Monad/ST/Class.hs
@@ -0,0 +1,28 @@
+{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies, FlexibleInstances, UndecidableInstances #-}
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Control.Monad.ST.Class
+-- Copyright   :  (C) 2011 Edward Kmett
+-- License     :  BSD-style (see the file LICENSE)
+--
+-- Maintainer  :  Edward Kmett <ekmett@gmail.com>
+-- Stability   :  experimental
+-- Portability :  MPTCs, fundeps
+--
+----------------------------------------------------------------------------
+module Control.Monad.ST.Class (MonadST(..)) where
+
+import Control.Monad.Trans.Class
+import Control.Monad.ST
+
+class Monad m => MonadST s m | m -> s where
+  liftST :: ST s a -> m a
+  
+instance MonadST RealWorld IO where
+  liftST = stToIO
+
+instance MonadST s (ST s) where
+  liftST = id
+
+instance (MonadTrans t, MonadST s m, Monad (t m)) => MonadST s (t m) where
+  liftST = lift . liftST
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright 2011 Edward Kmett
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+3. Neither the name of the author nor the names of his contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.lhs b/Setup.lhs
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--- /dev/null
+++ b/Setup.lhs
@@ -0,0 +1,7 @@
+#!/usr/bin/runhaskell
+> module Main (main) where
+
+> import Distribution.Simple
+
+> main :: IO ()
+> main = defaultMain
diff --git a/monad-st.cabal b/monad-st.cabal
new file mode 100644
--- /dev/null
+++ b/monad-st.cabal
@@ -0,0 +1,28 @@
+name:          monad-st
+category:      Control, Monads
+version:       0.1
+license:       BSD3
+cabal-version: >= 1.6
+license-file:  LICENSE
+author:        Edward A. Kmett
+maintainer:    Edward A. Kmett <ekmett@gmail.com>
+stability:     experimental
+homepage:      git://github.com/ekmett/monad-st
+copyright:     Copyright (C) 2011 Edward A. Kmett
+synopsis:      Provides a MonadST class
+description:   Provides a MonadST class
+build-type:    Simple
+
+source-repository head
+  type: git
+  location: git://github.com/ekmett/monad-st.git
+
+library
+  build-depends: 
+    base >= 4 && < 5,
+    transformers >= 0.2.0 && <= 0.3
+
+  exposed-modules:
+    Control.Monad.ST.Class
+
+  ghc-options:      -Wall