Alternatives and extensions for libraries

This table lists alternatives (packages and modules which can do the same or similar tasks) and extensions (code snippets and libraries which build on top rather than replace), for a range of Haskell packages and modules. Your help is appreciated in expanding it.

When editing this table, please try to keep it in alphabetical order (by package name, then by module name), maintain reflexivity (except with the package named "base") and create relevant links wherever possible. Please also try to avoid duplication and excessively long entries in the table, by creating wiki pages where necessary.

It is debatable whether a new version under a different name should go in the "alternative(s)" column or the "extension(s)" column. Perhaps it should go in the "extension(s)" column if it is (mostly) backward-compatible, and otherwise in the "alternative(s)" column.

This page is under construction - it was created 2007-05-11

Package	Module(s)	Extension(s)	Alternative(s)
base(1)	Data.Generics	snippet @ Scrap your boilerplate	Generic Haskell template-haskell
base	Text.PrettyPrint.HughesPJ		wl-pprint
base		strict
cgi			fastcgi
fastcgi			cgi
frisby	Text.Parsers.Frisby		parsec polyparse
haskell-src	all	haskell-src-exts	piggybackGHC
haskell-src-exts	Language.Haskell.Hsx.*		haskell-src piggybackGHC
monadLib			mtl
mtl			monadLib
parsec			frisby polyparse
piggybackGHC	all		haskell-src haskell-src-exts
polyparse			frisby parsec
template-haskell	all	patch @ hackage (warning: requires recompiling GHC!) th-lift	Data.Generics
wl-pprint	Text.PrettyPrint.Leijen		Text.PrettyPrint.HughesPJ

Note (1): base here, refers to GHC's base package, unless otherwise stated.