diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Revision history for mason
 
+* Added `Mason.Builder.Compat`
+
 ## 0.2
 
 * Added `doubleFixed`, `doubleSI` and `doubleExp`
diff --git a/mason.cabal b/mason.cabal
--- a/mason.cabal
+++ b/mason.cabal
@@ -1,7 +1,7 @@
 cabal-version:       2.4
 
 name:                mason
-version:             0.2
+version:             0.2.1
 synopsis:            Fast and extensible bytestring builder
 description:
   This package provides efficient implementation of bytestring builders.
@@ -25,6 +25,7 @@
     Mason.Builder
     Mason.Builder.Internal
     Mason.Builder.Dynamic
+    Mason.Builder.Compat
 
   c-sources: cbits/dtoa.c
   ghc-options: -Wall -O2
diff --git a/src/Mason/Builder.hs b/src/Mason/Builder.hs
--- a/src/Mason/Builder.hs
+++ b/src/Mason/Builder.hs
@@ -4,8 +4,8 @@
 {-# LANGUAGE LambdaCase #-}
 ----------------------------------------------------------------------------
 -- |
--- Module      :  Mason.Builders
--- Copyright   :  (c) Fumiaki Kinoshita 2019
+-- Module      :  Mason.Builder
+-- Copyright   :  (c) Fumiaki Kinoshita 2019-
 -- License     :  BSD3
 --
 -- Maintainer  :  Fumiaki Kinoshita <fumiexcel@gmail.com>
diff --git a/src/Mason/Builder/Compat.hs b/src/Mason/Builder/Compat.hs
new file mode 100644
--- /dev/null
+++ b/src/Mason/Builder/Compat.hs
@@ -0,0 +1,93 @@
+----------------------------------------------------------------------------
+-- |
+-- Module      :  Mason.Builder.Compat
+-- Copyright   :  (c) Fumiaki Kinoshita 2020-
+-- License     :  BSD3
+--
+-- Maintainer  :  Fumiaki Kinoshita <fumiexcel@gmail.com>
+--
+-- API which is almost compatible with Data.ByteString.Builder
+----------------------------------------------------------------------------
+module Mason.Builder.Compat
+  ( Builder
+  -- * Runners
+  , D.toStrictByteString
+  , D.toLazyByteString
+  , D.hPutBuilderLen
+  , D.hPutBuilder
+  , D.sendBuilder
+  -- * Primitives
+  , flush
+  -- * Bytes
+  , byteString
+  , lazyByteString
+  , shortByteString
+  -- * Text
+  , textUtf8
+  , encodeUtf8Builder
+  , encodeUtf8BuilderEscaped
+  , char7
+  , string7
+  , char8
+  , string8
+  , charUtf8
+  , stringUtf8
+  -- * Primitive
+  , storable
+  , int8
+  , word8
+  , int16LE
+  , int32LE
+  , int64LE
+  , word16LE
+  , word32LE
+  , word64LE
+  , floatLE
+  , doubleLE
+  , int16BE
+  , int32BE
+  , int64BE
+  , word16BE
+  , word32BE
+  , word64BE
+  , floatBE
+  , doubleBE
+  -- * Numeral
+  , floatDec
+  , doubleDec
+  , doubleSI
+  , doubleExp
+  , doubleFixed
+  , word8Dec
+  , word16Dec
+  , word32Dec
+  , word64Dec
+  , wordDec
+  , int8Dec
+  , int16Dec
+  , int32Dec
+  , int64Dec
+  , intDec
+  , integerDec
+  , word8Hex
+  , word16Hex
+  , word32Hex
+  , word64Hex
+  , wordHex
+  , int8HexFixed
+  , int16HexFixed
+  , int32HexFixed
+  , int64HexFixed
+  , word8HexFixed
+  , word16HexFixed
+  , word32HexFixed
+  , word64HexFixed
+  , floatHexFixed
+  , doubleHexFixed
+  , byteStringHex
+  , lazyByteStringHex
+  ) where
+import Mason.Builder hiding (Builder)
+import Mason.Builder.Dynamic as D
+
+type Builder = D.DynBuilder