Skip to content
You must be logged in to sponsor jgm

Become a sponsor to John MacFarlane

@jgm

John MacFarlane

jgm
Berkeley, CA

I have been developing open-source software since 2006. I am the creator and lead developer of the document conversion software pandoc. I am also the author of the commonmark spec, and I wrote the reference implementation cmark, which is the basis for the library that powers markdown conversion on GitHub.

Other libraries I maintain include

  • unicode-collation (pure Haskell implementation of the Unicode Collation Algorithm)
  • zip-archive (Haskell library for creating and reading zip archives)
  • skylighting (Haskell library for syntax highlighting)
  • texmath (Haskell library for converting between math formats: TeX, OOXML, MathML, eqn)
  • ipynb (Haskell library for manipulating Jupyter notebooks)
  • doctemplates (Haskell templating library for plain-text documents)
  • doclayout (Haskell prettyprinting library for plain-text documents)
  • yst (static site generator using pandoc and data from YAML files)
  • citeproc (Haskell library for processing citations using CSL stylesheets)
  • commonmark.js (JavaScript commonmark-parsing library)
  • commonmark-hs (Haskell library for parsing commonmark with many extensions)
  • djot (rational, consistent light markup format with fast parser in Lua)

Sponsoring me will help encourage me to continue spending much more time than I should be on these projects and others!

Current sponsors 45

@kaidokert
@pooyaw
@rnwst
@coreyt
@jblachly
@pbsds
@wooorm
@K4zuki
@michelk
Private Sponsor
@beejjorgensen
@gwerbin
@twsh
@szarka
@maxbeier
@hunan-rostomyan
@KathyReid
@dahlia
@mitchpaulus
@Wandmalfarbe
@jthomasmock
@marbu
@fsoedjede
@typora
@benz0li
@front-matter
@leohentschker
@timabbott
@steve-chavez
@sda030
@laturk
@mfhepp
@objcio
@cacology
@sciflow
@lrosenthol
@XVilka
Private Sponsor
@nikolaplejic
Private Sponsor
@rstudio-sponsorship
@bwrst
@liyanage
@docstream
Private Sponsor
Past sponsors 66
@ClayChipps
Private Sponsor
@kdeldycke
Private Sponsor
@rgonzalezayala
@TomBener
Private Sponsor
@fullstopslash
@kachick
@catwell
@craigmaloney
@leizhag
@nmstreethran
@ad-si
@xldrkp
@niszet
@baig
@tysongach

Featured work

  1. jgm/pandoc

    Universal markup converter

    Haskell 34,769
  2. jgm/texmath

    A Haskell library for converting LaTeX math to MathML.

    Haskell 322
  3. jgm/skylighting

    A Haskell syntax highlighting library with tokenizers derived from KDE syntax highlighting descriptions

    Haskell 195
  4. jgm/commonmark-hs

    Pure Haskell commonmark parsing library, designed to be flexible and extensible

    Haskell 135
  5. commonmark/commonmark-spec

    CommonMark spec, with reference implementations in C and JavaScript

    Python 4,888
  6. commonmark/cmark

    CommonMark parsing and rendering library and program in C

Learn more about sponsoring developers and organizations.

Report abuse

Select a tier

$ a month

Choose a custom amount.

$4 a month

Select

Coffee tier! Get a sponsor badge and show your support for my contributions to open-source software.

$16 a month

Select

You rely on pandoc or my other software to do your work. (How much time would it have taken to convert those 500 unix man pages to markdown without pandoc?)

$64 a month

Select

Your small business depends on pandoc or my other software and you're invested in its continued development and maintenance.

$256 a month

Select

Your enterprise depends on pandoc or my other software and you're invested in its continued development and maintenance.