Maintainers

This page describes the current module, library, and extension maintainers of Ruby.

Module Maintainers

A module maintainer is responsible for a certain part of Ruby.

A submaintainer of a module is like a maintainer. But the submaintainer does not have authority to change/add a feature on his/her part. They need consensus on ruby-core/ruby-dev before changing/adding. Some of submaintainers have commit right, others don’t.

Language core features including security

Yukihiro Matsumoto (matz)

Evaluator

Koichi Sasada (ko1)

Core classes

Yukihiro Matsumoto (matz)

Standard Library Maintainers

Libraries

lib/mkmf.rb

unmaintained

lib/rubygems.rb, lib/rubygems/*

Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt) github.com/rubygems/rubygems

lib/unicode_normalize.rb, lib/unicode_normalize/*

Martin J. Dürst

Extensions

ext/continuation

Koichi Sasada (ko1)

ext/coverage

Yusuke Endoh (mame)

ext/fiber

Koichi Sasada (ko1)

ext/monitor

Koichi Sasada (ko1)

ext/objspace

unmaintained

ext/pty

unmaintained

ext/ripper

unmaintained

ext/socket
  • Tanaka Akira (akr)

  • API change needs matz’s approval

ext/win32

NAKAMURA Usaku (usa)

Default gems Maintainers

Libraries

lib/abbrev.rb

Akinori MUSHA (knu) github.com/ruby/abbrev rubygems.org/gems/abbrev

lib/base64.rb

Yusuke Endoh (mame) github.com/ruby/base64 rubygems.org/gems/base64

lib/benchmark.rb

unmaintained github.com/ruby/benchmark rubygems.org/gems/benchmark

lib/bundler.rb, lib/bundler/*

Hiroshi SHIBATA (hsbt) github.com/rubygems/rubygems rubygems.org/gems/bundler

lib/cgi.rb, lib/cgi/*

unmaintained github.com/ruby/cgi rubygems.org/gems/cgi

lib/csv.rb

Kenta Murata (mrkn), Kouhei Sutou (kou) github.com/ruby/csv rubygems.org/gems/csv

lib/English.rb

unmaintained github.com/ruby/English rubygems.org/gems/English

lib/debug.rb

unmaintained github.com/ruby/debug

lib/delegate.rb

unmaintained github.com/ruby/delegate rubygems.org/gems/delegate

lib/did_you_mean.rb

Yuki Nishijima (yuki24) github.com/ruby/did_you_mean rubygems.org/gems/did_you_mean

ext/digest, ext/digest/*

Akinori MUSHA (knu) github.com/ruby/digest rubygems.org/gems/digest

lib/drb.rb, lib/drb/*

Masatoshi SEKI (seki) github.com/ruby/drb rubygems.org/gems/drb

lib/erb.rb

Masatoshi SEKI (seki), Takashi Kokubun (k0kubun) github.com/ruby/erb rubygems.org/gems/erb

lib/fileutils.rb

unmaintained github.com/ruby/fileutils rubygems.org/gems/fileutils

lib/find.rb

Kazuki Tsujimoto (ktsj) github.com/ruby/find rubygems.org/gems/find

lib/forwardable.rb

Keiju ISHITSUKA (keiju) github.com/ruby/forwardable rubygems.org/gems/forwardable

lib/getoptlong.rb

unmaintained github.com/ruby/getoptlong rubygems.org/gems/getoptlong

lib/ipaddr.rb

Akinori MUSHA (knu) github.com/ruby/ipaddr rubygems.org/gems/ipaddr

lib/irb.rb, lib/irb/*

aycabta github.com/ruby/irb rubygems.org/gems/irb

lib/optparse.rb, lib/optparse/*

Nobuyuki Nakada (nobu) github.com/ruby/optparse

lib/logger.rb

Naotoshi Seo (sonots) github.com/ruby/logger rubygems.org/gems/logger

lib/mutex_m.rb

Keiju ISHITSUKA (keiju) github.com/ruby/mutex_m rubygems.org/gems/mutex_m

lib/net/http.rb, lib/net/https.rb

NARUSE, Yui (naruse) github.com/ruby/net-http rubygems.org/gems/net-http

lib/net/protocol.rb

unmaintained github.com/ruby/net-protocol rubygems.org/gems/net-protocol

lib/observer.rb

unmaintained github.com/ruby/observer rubygems.org/gems/observer

lib/open3.rb

unmaintained github.com/ruby/open3 rubygems.org/gems/open3

lib/open-uri.rb

Tanaka Akira (akr) github.com/ruby/open-uri

lib/ostruct.rb

Marc-André Lafortune (marcandre) github.com/ruby/ostruct rubygems.org/gems/ostruct

lib/pp.rb

Tanaka Akira (akr) github.com/ruby/pp rubygems.org/gems/pp

lib/prettyprint.rb

Tanaka Akira (akr) github.com/ruby/prettyprint rubygems.org/gems/prettyprint

lib/pstore.rb

unmaintained github.com/ruby/pstore rubygems.org/gems/pstore

lib/racc.rb, lib/racc/*

Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt) github.com/ruby/racc rubygems.org/gems/racc

lib/readline.rb

aycabta github.com/ruby/readline rubygems.org/gems/readline

lib/resolv.rb

Tanaka Akira (akr) github.com/ruby/resolv rubygems.org/gems/resolv

lib/resolv-replace.rb

Tanaka Akira (akr) github.com/ruby/resolv-replace rubygems.org/gems/resolv-replace

lib/rdoc.rb, lib/rdoc/*

Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt) github.com/ruby/rdoc rubygems.org/gems/rdoc

lib/reline.rb, lib/reline/*

aycabta github.com/ruby/reline rubygems.org/gems/reline

lib/rinda/*

Masatoshi SEKI (seki) github.com/ruby/rinda rubygems.org/gems/rinda

lib/securerandom.rb

Tanaka Akira (akr) github.com/ruby/securerandom rubygems.org/gems/securerandom

lib/set.rb

Akinori MUSHA (knu) github.com/ruby/set rubygems.org/gems/set

lib/shellwords.rb

Akinori MUSHA (knu) github.com/ruby/shellwords rubygems.org/gems/shellwords

lib/singleton.rb

Yukihiro Matsumoto (matz) github.com/ruby/singleton rubygems.org/gems/singleton

lib/tempfile.rb

unmaintained github.com/ruby/tempfile rubygems.org/gems/tempfile

lib/time.rb

Tanaka Akira (akr) github.com/ruby/time rubygems.org/gems/time

lib/timeout.rb

Yukihiro Matsumoto (matz) github.com/ruby/timeout rubygems.org/gems/timeout

lib/thwait.rb

Keiju ISHITSUKA (keiju) github.com/ruby/thwait rubygems.org/gems/thwait

lib/tmpdir.rb

unmaintained github.com/ruby/tmpdir rubygems.org/gems/tmpdir

lib/tsort.rb

Tanaka Akira (akr) github.com/ruby/tsort rubygems.org/gems/tsort

lib/un.rb

WATANABE Hirofumi (eban) github.com/ruby/un rubygems.org/gems/un

lib/uri.rb, lib/uri/*

YAMADA, Akira (akira) github.com/ruby/uri rubygems.org/gems/uri

lib/yaml.rb, lib/yaml/*

Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt) github.com/ruby/yaml rubygems.org/gems/yaml

lib/weakref.rb

unmaintained github.com/ruby/weakref rubygems.org/gems/weakref

Extensions

ext/bigdecimal

Kenta Murata (mrkn) github.com/ruby/bigdecimal rubygems.org/gems/bigdecimal

ext/cgi

Nobuyoshi Nakada (nobu) github.com/ruby/cgi rubygems.org/gems/cgi

ext/date

unmaintained github.com/ruby/date rubygems.org/gems/date

ext/etc

Ruby core team github.com/ruby/etc rubygems.org/gems/etc

ext/fcntl

Ruby core team github.com/ruby/fcntl rubygems.org/gems/fcntl

ext/fiddle

Aaron Patterson (tenderlove) github.com/ruby/fiddle rubygems.org/gems/fiddle

ext/io/console

Nobuyuki Nakada (nobu) github.com/ruby/io-console rubygems.org/gems/io-console

ext/io/nonblock

Nobuyuki Nakada (nobu) github.com/ruby/io-nonblock rubygems.org/gems/io-nonblock

ext/io/wait

Nobuyuki Nakada (nobu) github.com/ruby/io-wait rubygems.org/gems/io-wait

ext/json

NARUSE, Yui (naruse), Hiroshi SHIBATA (hsbt) github.com/flori/json rubygems.org/gems/json

ext/nkf

NARUSE, Yui (naruse) github.com/ruby/nkf rubygems.org/gems/nkf

ext/openssl

Kazuki Yamaguchi (rhe) github.com/ruby/openssl rubygems.org/gems/openssl

ext/pathname

Tanaka Akira (akr) github.com/ruby/pathname rubygems.org/gems/pathname

ext/psych

Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt) github.com/ruby/psych rubygems.org/gems/psych

ext/racc

Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt) github.com/ruby/racc rubygems.org/gems/racc

ext/readline

TAKAO Kouji (kouji) github.com/ruby/readline-ext rubygems.org/gems/readline-ext

ext/stringio

Nobuyuki Nakada (nobu) github.com/ruby/stringio rubygems.org/gems/stringio

ext/strscan

Kouhei Sutou (kou) github.com/ruby/strscan rubygems.org/gems/strscan

ext/syslog

Akinori MUSHA (knu) github.com/ruby/syslog rubygems.org/gems/syslog

ext/win32ole

Masaki Suketa (suke) github.com/ruby/win32ole rubygems.org/gems/win32ole

ext/zlib

NARUSE, Yui (naruse) github.com/ruby/zlib rubygems.org/gems/zlib

Bundled gems upstream repositories

minitest

github.com/seattlerb/minitest

power_assert

github.com/ruby/power_assert

rake

github.com/ruby/rake

test-unit

github.com/test-unit/test-unit

rexml

github.com/ruby/rexml

rss

github.com/ruby/rss

net-ftp

github.com/ruby/net-ftp

net-imap

github.com/ruby/net-imap

net-pop

github.com/ruby/net-pop

net-smtp

github.com/ruby/net-smtp

matrix

github.com/ruby/matrix

prime

github.com/ruby/prime

rbs

github.com/ruby/rbs

typeprof

github.com/ruby/typeprof

Platform Maintainers

mswin64 (Microsoft Windows)

NAKAMURA Usaku (usa)

mingw32 (Minimalist GNU for Windows)

Nobuyoshi Nakada (nobu)

AIX

Yutaka Kanemoto (kanemoto)

FreeBSD

Akinori MUSHA (knu)

Solaris

Naohisa Goto (ngoto)

RHEL, CentOS

KOSAKI Motohiro (kosaki)

macOS

Kenta Murata (mrkn)

OpenBSD

Jeremy Evans (jeremyevans0)

cygwin, …

none. (Maintainer WANTED)

WebAssembly/WASI

Yuta Saito (katei)