diff --git a/Control/Categorical/Bifunctor.hs b/Control/Categorical/Bifunctor.hs
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--- /dev/null
+++ b/Control/Categorical/Bifunctor.hs
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+{-# LANGUAGE TypeOperators #-}
+
+module Control.Categorical.Bifunctor where
+
+import qualified Data.Bifunctor as Base
+
+import Control.Categorical.Functor
+import Control.Category.Dual
+import Data.Functor.Product
+import Data.Functor.Sum
+
+class (Functor r (NT t) f, Category s) => Bifunctor r s t f where
+    bimap :: r aᵣ bᵣ -> s aₛ bₛ -> f aᵣ aₛ `t` f bᵣ bₛ
+
+infixr 3 <***>, <⁂>
+(<***>), (<⁂>) :: Bifunctor r s t f => r aᵣ bᵣ -> s aₛ bₛ -> f aᵣ aₛ `t` f bᵣ bₛ
+(<***>) = bimap
+(<⁂>)   = bimap
+
+instance {-# INCOHERENT #-} (Base.Bifunctor f, Functor (->) (NT (->)) f) => Bifunctor (->) (->) (->) f where
+    bimap = Base.bimap
+
+instance Category s => Bifunctor (Dual s) s (->) s where
+    bimap (Dual f) g a = g . a . f
+
+instance Bifunctor (NT (->)) (NT (->)) (NT (->)) Product where
+    bimap (NT f) (NT g) = NT (\ (Pair x y) -> Pair (f x) (g y))
+
+instance Bifunctor (NT (->)) (NT (->)) (NT (->)) Sum where
+    bimap (NT f) (NT g) = NT (\ case InL x -> InL (f x)
+                                     InR y -> InR (g y))
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright Author name here © 2018
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * 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.
+
+    * Neither the name of Author name here nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"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 COPYRIGHT
+OWNER 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/Prelude.hs b/Prelude.hs
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--- /dev/null
+++ b/Prelude.hs
@@ -0,0 +1,9 @@
+module Prelude (module Control.Category,
+                module Data.Either,
+                Semigroup (..), Monoid (..)) where
+
+--import Algebra (Group)
+import Control.Category
+import Data.Either
+import Data.Monoid (Monoid (..))
+import Data.Semigroup (Semigroup (..))
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# bifunctor
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/bifunctor.cabal b/bifunctor.cabal
new file mode 100644
--- /dev/null
+++ b/bifunctor.cabal
@@ -0,0 +1,44 @@
+name:                bifunctor
+version:             0.1.0.0
+synopsis:            Bifunctors
+-- description:
+license:             BSD3
+license-file:        LICENSE
+author:              M Farkas-Dyck
+maintainer:          strake888@gmail.com
+copyright:           2018 M Farkas-Dyck
+-- category:            
+build-type:          Simple
+extra-source-files:  README.md
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     Control.Categorical.Bifunctor
+  other-modules:       Prelude
+  build-depends:       base >= 4.7 && < 5
+                     , category >= 0.2 && < 0.3
+  default-language:    Haskell2010
+  default-extensions:  UnicodeSyntax
+                     , LambdaCase
+                     , EmptyCase
+                     , InstanceSigs
+                     , PartialTypeSignatures
+                     , PolyKinds
+                     , ConstraintKinds
+                     , FlexibleContexts
+                     , FlexibleInstances
+                     , MultiParamTypeClasses
+                     , MonadComprehensions
+                     , StandaloneDeriving
+                     , DeriveFunctor, DeriveFoldable, DeriveTraversable
+  ghc-options:         -Wall -Wcompat -Wredundant-constraints -Wno-name-shadowing
+                       -Wincomplete-record-updates -Wincomplete-uni-patterns
+                       -Werror=incomplete-patterns
+                       -Werror=incomplete-uni-patterns
+                       -Werror=incomplete-record-updates
+                       -Werror=missing-fields
+                       -Werror=missing-methods
+
+source-repository head
+  type:     git
+  location: https://github.com/strake/bifunctor.hs