Here’s the Haskell package popularity statististics for the month of August 2009 (a couple of days early, due to ICFP travel). These are downloads of source using the logs for the Hackage package server (kindly hosted by Galois). They measure popularity of Haskell source code packages on Hackage.

Headlines

• Total Hackage downloads : 1.22 million (+82k)
  
• Total Packages on Hackage : 1520 packages
• Total Contributors : 414 developers
• Over 80 thousand downloads in August
• Hackage now links to distro packages where available

Top 20 most downloaded Haskell applications in August

1. xmonad – A tiling window manager
2. haddock – A documentation-generation tool for Haskell libraries
3. cpphs – A liberalised re-implementation of the C pre-processor
4. hscolour – Colourise Haskell code
5. cabal-install – The command-line interface for Cabal and Hackage.
6. yi – The Haskell-Scriptable Editor
7. darcs – a distributed, interactive, smart revision control system
8. happy – a parser generator for Haskell
9. pandoc – Conversion between markup formats
10. xmobar – A Minimalistic Text Based Status Bar
11. leksah – Haskell IDE written in Haskell
12. alex – a tool for generating lexical analysers in Haskell
13. happstack – The haskell application server stack + code generation
14. hlint – Source code suggestions for Haskell
15. gitit – Wiki using happstack, git or darcs, and pandoc
16. hoogle – Haskell API Search
17. cabal2arch – Create Arch Linux packages from Cabal packages
18. happs-tutorial – A Happstack Web 2.0-type demo
19. uuagc – Attribute Grammar System of Universiteit Utrecht
20. yst – Builds a static website from templates and data in YAML or CSV files

Top 20 Haskell libraries in August

1. HTTP – Client-side HTTP
2. zlib – Compression and decompression in the gzip and zlib formats
3. binary – Binary serialisation for Haskell values using lazy ByteStrings
4. utf8-string – Support for reading and writing UTF8 Strings
5. haskell-src-exts – Manipulating Haskell source: abstract syntax, lexer, parser, pretty printing
6. QuickCheck – Automatic testing of Haskell programs
7. ghc-paths – Knowledge of GHC’s installation directories
8. OpenGL – A binding for the OpenGL graphics system
9. HaXml – Utilities for manipulating XML documents
10. GLUT – A binding for the OpenGL Utility Toolkit
11. pureMD5 – MD5 implementations that should become part of a ByteString Crypto package
12. time – A time library
13. terminfo – Haskell bindings to the terminfo library
14. parsec – Monadic parser combinators
15. X11 – A binding to the X11 graphics library
16. regex-base – Regular expressions for Haskell
17. network – Networking-related facilities
18. uniplate – Uniform type generic traversals
19. unix-compat – Portable POSIX-compatibility layer
20. transformers – Concrete monad transformers

We can also compute the librarys and applications that had the biggest increase in downloads in August over the previous month. These libraries are increasing in use the fastest:

Top 10 rising libraries

1. Tensor – Tensor data types
2. ObjectName – Explicitly handled object names
3. StateVar – State variables for OpenGL
4. OpenGLRaw – A raw binding for the OpenGL graphics system
5. GLURaw – A raw binding for the OpenGL graphics system
6. text – An efficient packed Unicode text type
7. HaXml – Utilities for manipulating XML documents
8. MissingH – Large utility library
9. HStringTemplate – StringTemplate implementation in Haskell
10. derive – A program and library to derive instances for data types

Top 10 rising applications

1. haddock – A documentation-generation tool for Haskell libraries
2. pandoc – Conversion between markup formats
3. gitit – Wiki using happstack, git or darcs, and pandoc
4. yi – The Haskell-Scriptable Editor
5. cabal2arch – Create Arch Linux packages from Cabal packages
6. hake – make tool. ruby : rake = haskell : hake
7. hpodder – Podcast Aggregator (downloader)
8. nemesis – a Rake like task management tool
9. flow2dot – generate sequence/flow diagrams from plain text source
10. lhc – LHC Haskell Compiler

All these can be installed with:

 $ cabal install <package>

Crunch the Numbers

Here’s the data so you can see how your favourite packages are going:

• Most Popular in August
• Most Popular all time
• Month-by-month breakdown
• Raw CSV download data by month

And don’t forget — the Haskell Platform is cutting into cabal-install’s monopoly on distribution of Haskell code… downloads for that are counted separately.