diff --git a/Control/Arrow/Abort.hs b/Control/Arrow/Abort.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/Abort.hs
@@ -0,0 +1,38 @@
+module Control.Arrow.Abort (module Control.Arrow.Abort.Class, AbortT (..), runAbortT) where
+
+import Prelude hiding ((.), id);
+
+import Control.Monad;
+import Control.Category;
+import Control.Arrow;
+import Control.Arrow.Trans;
+import Control.Arrow.Abort.Class;
+
+newtype AbortT v r a b = AbortT { unwrapAbortT :: r a (Either v b) };
+
+runAbortT :: Arrow r => AbortT v r a v -> r a v;
+runAbortT = (>>> arr (either id id)) . unwrapAbortT;
+
+instance ArrowTrans (AbortT v) where {
+  lift = AbortT . (>>> arr Right);
+  tmap f = AbortT . f . unwrapAbortT;
+};
+
+instance (ArrowChoice r) => Category (AbortT v r) where {
+  id = AbortT (arr Right);
+  AbortT f . AbortT g = AbortT (right f . g >>> arr join);
+};
+
+instance (ArrowChoice r) => Arrow (AbortT v r) where {
+  arr = AbortT . arr . liftM Right;
+  first  = AbortT . (>>> arr (uncurry (liftM2 (,)))) . (*** arr Right) . unwrapAbortT;
+  second = AbortT . (>>> arr (uncurry (liftM2 (,)))) . (arr Right ***) . unwrapAbortT;
+};
+
+instance (ArrowChoice r) => ArrowAbort v (AbortT v r) where {
+  abort = AbortT $ arr Left;
+};
+
+instance (ArrowChoice r, ArrowTrans xT, Arrow (xT (AbortT v r))) => ArrowAbort v (xT (AbortT v r)) where {
+  abort = lift abort;
+};
diff --git a/Control/Arrow/Abort/Class.hs b/Control/Arrow/Abort/Class.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/Abort/Class.hs
@@ -0,0 +1,10 @@
+{-# LANGUAGE FunctionalDependencies #-}
+
+module Control.Arrow.Abort.Class where
+
+import Control.Arrow;
+import Control.Arrow.Trans;
+
+class Arrow r => ArrowAbort v r | r -> v where {
+  abort :: r v a; -- terminate with final value
+};
diff --git a/Control/Arrow/List/Class.hs b/Control/Arrow/List/Class.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/List/Class.hs
@@ -0,0 +1,9 @@
+module Control.Arrow.List.Class where
+
+import Control.Arrow;
+import Control.Arrow.Trans;
+
+class Arrow r => ArrowList r where {
+  arrL :: ( a  -> [b]) -> r a b;
+  mapL :: ([b] -> [c]) -> r a b -> r a c;
+};
diff --git a/Control/Arrow/Reader.hs b/Control/Arrow/Reader.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/Reader.hs
@@ -0,0 +1,53 @@
+module Control.Arrow.Reader (module Control.Arrow.Reader.Class, ReaderT (..), inlineReaderT, outlineReaderT, withReaderTA, withReaderT) where
+
+import Prelude hiding ((.), id);
+
+import Control.Monad;
+import Control.Category;
+import Control.Arrow;
+import Control.Arrow.Trans;
+import Control.Arrow.Reader.Class;
+
+newtype ReaderT r s a b = ReaderT { runReaderT :: r -> s a b };
+
+inlineReaderT :: (ArrowApply s) => ReaderT r s a b -> s (r, a) b;
+inlineReaderT = runReaderT >>> arr . (*** id) >>> (>>> app);
+
+outlineReaderT :: (Arrow s) => s (r, a) b -> ReaderT r s a b;
+outlineReaderT = ReaderT . flip ((>>>) . arr . (&&& id) . const);
+
+instance ArrowTrans (ReaderT r) where {
+  lift = ReaderT . const;
+  tmap f = ReaderT . liftM f . runReaderT;
+};
+
+instance (Category s) => Category (ReaderT r s) where {
+  id = ReaderT (const id);
+  ReaderT f . ReaderT g = ReaderT (liftM2 (.) f g);
+};
+
+instance (Arrow s) => Arrow (ReaderT r s) where {
+  arr = ReaderT . const . arr;
+  first  = ReaderT . (.) first  . runReaderT;
+  second = ReaderT . (.) second . runReaderT;
+};
+
+instance (ArrowApply s) => ArrowApply (ReaderT r s) where {
+  app = ReaderT $ \ r -> arr (\ (ReaderT f, x) -> (f r, x)) >>> app;
+};
+
+instance (Arrow s) => ArrowReader r (ReaderT r s) where {
+  ask   = ReaderT (arr . const);
+  local = withReaderT;
+};
+
+instance (Arrow s, ArrowTrans xT, Arrow (xT (ReaderT r s))) => ArrowReader r (xT (ReaderT r s)) where {
+  ask   = lift ask;
+  local = undefined;
+};
+
+withReaderTA :: (ArrowApply s) => s q r -> ReaderT r s a b -> ReaderT q s a b;
+withReaderTA a = outlineReaderT . (<<< a *** id) . inlineReaderT;
+
+withReaderT :: (q -> r) -> ReaderT r s a b -> ReaderT q s a b;
+withReaderT f = ReaderT . (. f) . runReaderT;
diff --git a/Control/Arrow/Reader/Class.hs b/Control/Arrow/Reader/Class.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/Reader/Class.hs
@@ -0,0 +1,14 @@
+{-# LANGUAGE FunctionalDependencies #-}
+
+module Control.Arrow.Reader.Class where
+
+import Control.Arrow;
+import Control.Arrow.Trans;
+
+class Arrow s => ArrowReader r s | s -> r where {
+  ask :: s () r;
+  local :: (r -> r) -> s a b -> s a b;
+};
+
+asks :: (ArrowReader r s) => (r -> a) -> s () a;
+asks x = ask >>> arr x;
diff --git a/Control/Arrow/State.hs b/Control/Arrow/State.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/State.hs
@@ -0,0 +1,42 @@
+module Control.Arrow.State (module Control.Arrow.State.Class, StateT (..)) where
+
+import Prelude hiding ((.), id);
+
+import Control.Arrow;
+import Control.Arrow.Trans;
+import Control.Arrow.State.Class;
+import Control.Category;
+
+newtype StateT s r a b = StateT { runStateT :: r (a, s) (b, s) };
+
+instance ArrowTrans (StateT s) where {
+  lift = StateT . (*** id);
+  tmap f = StateT . f . runStateT;
+};
+
+instance (Category r) => Category (StateT s r) where {
+  id = StateT id;
+  StateT x . StateT y = StateT (x . y);
+};
+
+swap_snds_A :: Arrow r => r ((a, b), c) ((a, c), b);
+swap_snds_A = arr $ \ ((x, y), z) -> ((x, z), y);
+
+instance (Arrow r) => Arrow (StateT s r) where {
+  arr = StateT . arr . (*** id);
+  first = StateT . (>>>) swap_snds_A . (<<<) swap_snds_A . (*** id) . runStateT;
+};
+
+instance (ArrowApply r) => ArrowApply (StateT s r) where {
+  app = StateT $ arr (\ ((StateT f, x), s) -> (f, (x, s))) >>> app;
+};
+
+instance (Arrow r) => ArrowState s (StateT s r) where {
+  get = StateT $ arr $ \ (_, s) -> (s,  s);
+  put = StateT $ arr $ \ (s, _) -> ((), s);
+};
+
+instance (Arrow r, ArrowTrans xT, Arrow (xT (StateT s r))) => ArrowState s (xT (StateT s r)) where {
+  get = lift get;
+  put = lift put;
+};
diff --git a/Control/Arrow/State/Class.hs b/Control/Arrow/State/Class.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/State/Class.hs
@@ -0,0 +1,16 @@
+{-# LANGUAGE FunctionalDependencies #-}
+
+module Control.Arrow.State.Class where
+
+import Control.Arrow;
+
+class Arrow r => ArrowState s r | r -> s where {
+  get :: r ()  s;
+  put :: r s  ();
+};
+
+gets :: ArrowState s r => (s -> a) -> r () a;
+gets f = get >>> arr f;
+
+set :: ArrowState s r => (s -> s) -> r a a;
+set f = arr id &&& (arr (const ()) >>> get >>> arr f >>> put) >>> arr fst;
diff --git a/Control/Arrow/Trans.hs b/Control/Arrow/Trans.hs
new file mode 100644
--- /dev/null
+++ b/Control/Arrow/Trans.hs
@@ -0,0 +1,10 @@
+{-# LANGUAGE ExistentialQuantification #-}
+
+module Control.Arrow.Trans where
+
+import Control.Arrow;
+
+class ArrowTrans xT where {
+  lift :: Arrow r => r a b -> xT r a b;
+  tmap :: (Arrow r, Arrow s) => (∀ a b . r a b -> s a b) -> xT r a b -> xT s a b;
+};
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple;
+main = defaultMain;
diff --git a/atl.cabal b/atl.cabal
new file mode 100644
--- /dev/null
+++ b/atl.cabal
@@ -0,0 +1,17 @@
+Name:atl
+Version:15310.92
+Description:Arrow Transformer Library
+License:LGPL
+License-File:license.txt
+Author:Matthew Farkas-Dyck
+Maintainer:strake888@gmail.com
+Category:Control
+Synopsis:Arrow Transformer Library
+Build-Type:Simple
+Cabal-Version: >= 1.2.3
+
+Library {
+  Build-Depends: base >= 4 && < 5
+  Extensions: UnicodeSyntax, RankNTypes, MultiParamTypeClasses, FlexibleInstances, FlexibleContexts
+  Exposed-Modules: Control.Arrow.Trans, Control.Arrow.Reader, Control.Arrow.Reader.Class, Control.Arrow.List.Class, Control.Arrow.Abort, Control.Arrow.Abort.Class, Control.Arrow.State, Control.Arrow.State.Class
+}
diff --git a/license.txt b/license.txt
new file mode 100644
--- /dev/null
+++ b/license.txt
@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+
+
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+
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