diff --git a/Data/IRC/CLog/Parse.hs b/Data/IRC/CLog/Parse.hs
new file mode 100644
--- /dev/null
+++ b/Data/IRC/CLog/Parse.hs
@@ -0,0 +1,149 @@
+{-# LANGUAGE
+    PatternGuards #-}
+
+-- | Parse events from @clog@ output, such as the files
+-- at <http://tunes.org/~nef/logs/haskell/>.
+--
+-- IRC has no single standard character encoding.  This
+-- module decodes messages as UTF-8 following common
+-- practice on Freenode.
+
+module Data.IRC.CLog.Parse
+  (
+  -- * Parsing log files
+  parseLog
+  -- * Configuring the parser
+  , Config(..)
+  , haskellConfig
+  -- * Re-export
+  , module Data.IRC.Event
+  ) where
+
+import Data.IRC.Event
+
+import Data.Word
+import Data.List
+import Control.Applicative
+
+import qualified Data.Foldable            as F
+import qualified Data.Attoparsec          as P
+import qualified Data.ByteString          as B
+import qualified Data.ByteString.Char8    as B8
+import qualified Data.Time                as Time
+import qualified Data.Text                as T
+import qualified Data.Text.Encoding       as T
+import qualified Data.Text.Encoding.Error as T
+import qualified System.FilePath          as Path
+import qualified System.Environment       as Env
+import qualified System.IO.Error          as IOError
+import qualified Data.Time.LocalTime.TimeZone.Series as Zone
+import qualified Data.Time.LocalTime.TimeZone.Olson  as Zone
+
+
+-- | Configuring the parser.
+data Config = Config
+  { timeZone :: String   -- ^ Timestamp time zone; an Olson time zone name.
+  , zoneInfo :: FilePath -- ^ Directory for time zone files; @$TZDIR@ overrides.
+  } deriving (Show)
+
+-- | @'Config'@ value suitable for parsing @#haskell@ logs on Linux.
+haskellConfig :: Config
+haskellConfig = Config
+  { timeZone = "America/Los_Angeles"
+  , zoneInfo = "/usr/share/zoneinfo" }
+
+
+-- Many text encodings are used on IRC.
+-- We decode clog metadata as ASCII.
+-- We parse messages as UTF-8 in a lenient mode.
+
+decode :: B.ByteString -> T.Text
+decode = T.decodeUtf8With T.lenientDecode
+
+
+-- Timestamps are in local time and must be converted.
+
+type TimeConv = Time.LocalTime -> Time.UTCTime
+
+getTimeConv :: FilePath -> IO TimeConv
+getTimeConv p = Zone.localTimeToUTC' <$> Zone.getTimeZoneSeriesFromOlsonFile p
+
+data TimeAdj = TimeAdj Time.Day TimeConv
+
+
+-- Parsers.
+
+notNewline :: Word8 -> Bool
+notNewline w = w /= 13 && w /= 10
+
+restOfLine :: P.Parser T.Text
+restOfLine = decode <$> P.takeWhile notNewline <* P.take 1
+
+nextLine :: P.Parser ()
+nextLine = P.skipWhile notNewline <* P.take 1
+
+digits :: Int -> P.Parser Int
+digits n = atoi <$> P.count n digit where
+  atoi = foldl' (\m d -> m*10 + fromIntegral d - 48) 0
+  digit = P.satisfy isDigit
+  isDigit w = w >= 48 && w <= 57
+
+time :: TimeAdj -> P.Parser Time.UTCTime
+time (TimeAdj day conv) = f <$> d2 <* col <*> d2 <* col <*> d2 where
+  d2  = digits 2
+  col = P.word8 58
+  f h m s = conv . Time.LocalTime day $ Time.TimeOfDay h m (fromIntegral s)
+
+event :: P.Parser Event
+event = F.asum
+  [ str " --- " *> F.asum
+    [ userAct Join  "join: "
+    , userAct Part  "part: "
+    , userAct Quit  "quit: "
+    , ReNick <$ str "nick: " <*> nick <* str " -> " <*> nick <* nextLine
+    , Mode   <$ str "mode: " <*> nick <* str " set " <*> restOfLine
+    , Kick   <$ str "kick: " <*> nick <* str " was kicked by " <*> nick <* chr ' ' <*> restOfLine
+    , global Log    "log: "
+    , global Topic  "topic: "
+    , global Names  "names: "
+    ]
+  , Talk   <$ str " <"  <*> nick <*  str "> " <*> restOfLine
+  , Notice <$ str " -"  <*> nick <*> restOfLine -- FIXME: parse host
+  , Act    <$ str " * " <*> nick <*  chr ' '  <*> restOfLine
+  ] where
+    chr  = P.word8  . fromIntegral . fromEnum
+    str  = P.string . B8.pack
+    nick = (Nick . decode) <$> P.takeWhile (not . P.inClass " \n\r\t\v<>")
+    userAct f x = f <$ str x <*> nick <* chr ' ' <*> restOfLine
+    global f x = f <$ str x <*> restOfLine
+
+line :: TimeAdj -> P.Parser EventAt
+line adj =
+  P.try (EventAt <$> time adj <*> event)
+  <|>   (NoParse <$> restOfLine)
+
+safeRead :: (Read a) => String -> Maybe a
+safeRead x | [(v,"")] <- reads x = Just v
+safeRead _ = Nothing
+
+getDay :: FilePath -> Time.Day
+getDay p
+  | (_, [y1,y0,'.',m1,m0,'.',d1,d0]) <- Path.splitFileName p
+  , Just [y,m,d] <- mapM safeRead [[y1,y0],[m1,m0],[d1,d0]]
+  = Time.fromGregorian (2000 + fromIntegral y) m d
+getDay p = error ("cannot parse date from filename: " ++ p)
+
+-- | Parse a log file.  The file name (after any directory)
+-- is significant.  It is used to set the date for timestamps.
+-- It should have the form @YY.MM.DD@, as do the files on
+-- @tunes.org@.
+parseLog :: Config -> FilePath -> IO [EventAt]
+parseLog (Config{timeZone=tz, zoneInfo=zi}) p = do
+  tzdir <- either (const zi) id <$> IOError.try (Env.getEnv "TZDIR")
+  adj   <- TimeAdj (getDay p) <$> getTimeConv (Path.combine tzdir tz)
+  b <- B.readFile p
+  let go r@P.Fail{}    = error $ show r
+      go (P.Partial g) = go $ g B.empty
+      go (P.Done _  x) = x
+  let es = go $ P.parse (P.manyTill (line adj) P.endOfInput) b
+  return es
diff --git a/Data/IRC/Event.hs b/Data/IRC/Event.hs
new file mode 100644
--- /dev/null
+++ b/Data/IRC/Event.hs
@@ -0,0 +1,38 @@
+-- | Represents events in an IRC channel.
+-- These do not correspond precisely to messages of the IRC
+-- protocol.  They provide a somewhat higher-level view.
+
+module Data.IRC.Event
+  ( Nick   (..)
+  , Event  (..)
+  , EventAt(..)
+  ) where
+
+import qualified Data.Time as Time
+import qualified Data.Text as T
+
+-- | Event with timestamp.
+data EventAt
+  = EventAt Time.UTCTime Event  -- ^ Event with timestamp.
+  | NoParse T.Text              -- ^ Unparsable line.
+  deriving (Show, Eq, Ord)
+
+-- | IRC nicks.
+newtype Nick = Nick T.Text
+  deriving (Show, Eq, Ord)
+
+-- | Events in an IRC channel.
+data Event
+  = Join   Nick      T.Text  -- ^ User joined.
+  | Part   Nick      T.Text  -- ^ User left the channel.
+  | Quit   Nick      T.Text  -- ^ User quit the server.
+  | ReNick Nick Nick         -- ^ User changed from one to another nick.
+  | Talk   Nick      T.Text  -- ^ User spoke (@PRIVMSG@).
+  | Notice Nick      T.Text  -- ^ User spoke (@NOTICE@).
+  | Act    Nick      T.Text  -- ^ User acted (@CTCP ACTION@).
+  | Kick   Nick Nick T.Text  -- ^ User was kicked by user.
+  | Mode   Nick      T.Text  -- ^ User set mode on the channel.
+  | Log              T.Text  -- ^ Logging started or stopped.
+  | Topic            T.Text  -- ^ Topic listing or change.
+  | Names            T.Text  -- ^ Users list.
+  deriving (Show, Eq, Ord)
diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,26 @@
+Copyright (c) Keegan McAllister 2010
+
+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 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 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.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,4 @@
+#! /usr/bin/runhaskell
+
+import Distribution.Simple
+main = defaultMain
diff --git a/clogparse.cabal b/clogparse.cabal
new file mode 100644
--- /dev/null
+++ b/clogparse.cabal
@@ -0,0 +1,31 @@
+name:                clogparse
+version:             0.1
+license:             BSD3
+license-file:        LICENSE
+synopsis:            Parse IRC logs such as the #haskell logs on tunes.org
+category:            Text, IRC, Language
+author:              Keegan McAllister <mcallister.keegan@gmail.com>
+maintainer:          Keegan McAllister <mcallister.keegan@gmail.com>
+build-type:          Simple
+cabal-version:       >=1.2
+description:
+  Use this library to parse IRC logs saved by the @clog@ bot on Freenode.
+  This includes the logs of @#haskell@ which are available from
+  <http://tunes.org/~nef/logs/haskell/>.
+  .
+  Suggestions and patches are welcome.
+
+library
+  exposed-modules:
+      Data.IRC.Event
+    , Data.IRC.CLog.Parse
+  ghc-options:       -Wall
+  build-depends:
+      base            >= 3 && < 5
+    , bytestring      >= 0.9
+    , text            >= 0.8
+    , time            >= 1.1
+    , filepath        >= 1.1
+    , timezone-olson  >= 0.1
+    , timezone-series >= 0.1
+    , attoparsec      >= 0.8