Standard Gems 3.4.1

Default Gems

Default Gem	3.4.1	3.4.0	Description	Resources
benchmark	0.4.0	0.4.0	Benchmark utility: Measures and reports the time used to execute code	RubyGems · GitHub · RDoc · CRuby
bundler	2.6.2	2.6.2	Bundler is the local package manager for Ruby applications	RubyGems · GitHub · RDoc · CRuby
cgi c	0.4.1	0.4.1	Support for CGI (Common Gateway Interface)	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3) · JRuby (1)
date c	3.4.1	3.4.1	The Date and DateTime classes	RubyGems · GitHub · RDoc (1) · RDoc (2) · CRuby · JRuby (1) · JRuby (2) · JRuby (3)
delegate	0.4.0	0.4.0	Provides three ways to delegate method calls	RubyGems · GitHub · RDoc · CRuby
did_you_mean	2.0.0	2.0.0	Patches error messages to suggest correct spelling of methods/classes/variables	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2)
digest c	3.2.0	3.2.0	Provides common hash functions like MD5, SHA1, SHA2, or RIPEMD-160	RubyGems · GitHub · RDoc · CRuby · JRuby (1)
english	0.8.0	0.8.0	Readable aliases for special global variables	RubyGems · GitHub · RDoc · CRuby · JRuby
erb	4.0.4	4.0.4	Templating engine for Ruby	RubyGems · GitHub · RDoc · CRuby
error_highlight	0.7.0	0.7.0	Improves error messages with additional debug info	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2)
etc c	1.4.5	1.4.5	Access UNIX info from `/etc`	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
fcntl c	1.2.0	1.2.0	Loads values from the OS' `fcntl.h` to be used for low-level file descriptor manipulation system calls with IO#fcntl and IO.sysopen	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
fiddle c	1.1.6	1.1.6	Support for FFI (Foreign Function Interface)	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
fileutils	1.7.3	1.7.3	Utilities for working with the file system, such as copying, moving, or deleting files	RubyGems · GitHub · RDoc · CRuby · JRuby (1)
find	0.2.0	0.2.0	Finds all files in a given directory and its sub-directories	RubyGems · GitHub · RDoc · CRuby
forwardable	1.3.3	1.3.3	Provides a way to delegate method calls. Also see this overview of delegation in Ruby, which contains an example	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3)
io-console c	0.8.0	0.8.0	Patches `IO` for simple and portable access to the console	RubyGems · GitHub · RDoc · CRuby
io-nonblock c	0.3.1	0.3.1	Allows to work with `IO` streams in a non-blocking way	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
io-wait c	0.3.1	0.3.1	Adds methods to wait until an `IO` stream becomes readable or writable	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
ipaddr	1.2.7	1.2.7	IP address manipulation (IPv4 and IPv6)	RubyGems · GitHub · RDoc · CRuby
irb	1.14.3	1.14.3	Interactive Ruby Console (REPL)	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2)
json c	2.9.1	2.9.1	Support for JSON (JavaScript Object Notation)	RubyGems · GitHub · RDoc · CRuby
logger	1.6.4	1.6.4	Logging utility	RubyGems · GitHub · RDoc · CRuby
net-http	0.6.0	0.6.0	Support for HTTP (Hypertext Transfer Protocol)	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3) · JRuby (1) · JRuby (2) · JRuby (3)
net-protocol	0.2.2	0.2.2	Internal class for the other net-* libraries	RubyGems · GitHub · RDoc · CRuby · JRuby
open3	0.2.1	0.2.1	Simple spawning of child processes	RubyGems · GitHub · RDoc · CRuby · JRuby
openssl c	3.3.0	3.3.0	Wraps OpenSSL for cryptographic functionality	RubyGems · GitHub · RDoc · CRuby
open-uri	0.5.0	0.5.0	Monkeypatches Kernel#open to support remote endpoints via `net/http` and `net/ftp`	RubyGems · GitHub · RDoc · CRuby
optparse	0.6.0	0.6.0	Command-line option parser	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3)
ostruct	0.6.1	0.6.1	Wrapper around Hash which lets you read and set attributes with a method-based API	RubyGems · GitHub · RDoc · CRuby
pathname c	0.4.0	0.4.0	Wraps `File`, `FileTest`, `Dir`, and `FileUtils` to ease working with file system paths	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
prism c	1.2.0	1.2.0	Prism is a portable, error tolerant, and maintainable recursive descent parser for the Ruby language	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3) · CRuby (4) · CRuby (5)
pp	0.6.2	0.6.2	The `pp` print debugging helper via `require 'pp'`. It will format the result object in more readable way.	RubyGems · GitHub · RDoc · CRuby · JRuby
prettyprint	0.2.0	0.2.0	Better object formatting and inspection. Also see the pp gem.	RubyGems · GitHub · RDoc · CRuby
pstore	0.1.4	0.1.4	Transactional file storage for Ruby objects	RubyGems · GitHub · RDoc · CRuby
psych c	5.2.2	5.2.2	Support for YAML (YAML Ain't Markup Language)	RubyGems · GitHub · RDoc · CRuby
rdoc	6.10.0	6.10.0	Ruby documentation generator	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2)
readline	0.0.4	0.0.4	If available, readline-ext will be loaded, or (Ruby-only) default gem reline will be used.	RubyGems · GitHub · RDoc · CRuby
reline	0.6.0	0.6.0	Ruby-only implementation of GNU Readline / NetBSD Editline	RubyGems · GitHub · RDoc · CRuby
resolv	0.6.0	0.6.0	Thread-aware DNS resolver	RubyGems · GitHub · RDoc · CRuby (1) · JRuby
ruby2_keywords	0.0.5	0.0.5	A shim gemspec to indicate that the Ruby implementation includes the `ruby2_keywords` method	RubyGems · GitHub · RDoc
rubygems	3.6.2	3.6.2	RubyGems allows you to download, install, and use Ruby software packages on your system	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · JRuby (1)
securerandom	0.4.1	0.4.1	Provides cryptographical randomness from openssl or the OS	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
set	1.1.1	1.1.1	Data structure for unordered collections without duplicates. Implemented on top of Hash.	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
shellwords	0.2.2	0.2.2	Escape and manipulate commands to be run in the shell	RubyGems · GitHub · RDoc · CRuby
singleton	0.3.0	0.3.0	Mixin for Ruby classes that should only have one instance	RubyGems · GitHub · RDoc · CRuby
stringio c	3.1.2	3.1.2	Makes strings behave like IO objects	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
strscan c	3.1.2	3.1.2	Lexical string scanning	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
syntax_suggest	2.0.2	2.0.2	Assists with code recommendation to resolve Ruby syntax errors	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2)
tempfile	0.3.1	0.3.1	Simplifies OS independent creation of temporary files	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
time	0.4.1	0.4.1	Adds more methods to `Time`	RubyGems · GitHub · RDoc · CRuby
timeout	0.4.3	0.4.3	Auto-terminates code blocks after the time limit is reached	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)
tmpdir	0.3.1	0.3.1	Adds a `Dir.mktmpdir` method for creating temporary directories OS independently	RubyGems · GitHub · RDoc · CRuby · JRuby
tsort	0.2.0	0.2.0	Topological sorting using Tarjan’s algorithm, which finds strongly connected components in graphs	RubyGems · GitHub · RDoc · CRuby
un	0.3.0	0.3.0	Utilities to replace common UNIX commands	RubyGems · GitHub · RDoc · CRuby
uri	1.0.2	1.0.2	URI/URL manipulation	RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · JRuby (1) · JRuby (2)
weakref	0.1.3	0.1.3	Explicitly allow objects to be garbage collected	RubyGems · GitHub · RDoc · CRuby · JRuby
win32ole c	1.9.1	1.9.1	Windows OLE automation interface	RubyGems · GitHub · RDoc · CRuby · JRuby
yaml	0.4.0	0.4.0	`require 'yaml'` will load the psych default gem, yaml/dbm is a wrapper around DBM using YAML serialization, and yaml/store lets you use pstore with YAML	RubyGems · GitHub · RDoc (1) · RDoc (2) · RDoc (3) · CRuby (1) · CRuby (2) · CRuby (3) · JRuby (1) · JRuby (2)
zlib c	3.2.1	3.2.1	Interface to the zlib compression library	RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2)

Bundled Gems

Bundled Gem	3.4.1	3.4.0	Description	Resources
abbrev	0.1.2	0.1.2	Finds the shortest unique abbreviation amongst many strings	RubyGems · GitHub · RDoc
base64	0.2.0	0.2.0	Encodes and decodes strings to a Base64 representation. Implemented as a small wrapper around String#unpack	RubyGems · GitHub · RDoc
bigdecimal c	3.1.8	3.1.8	Support for arbitrary-precision floating point decimal arithmetic	RubyGems · GitHub · RDoc
csv	3.3.2	3.3.2	Support for CSV (Comma-separated Values)	RubyGems · GitHub · RDoc
debug c	1.10.0	1.10.0	Command-line debugger	RubyGems · GitHub · RDoc
drb	2.2.1	2.2.1	Distributed object system for Ruby	RubyGems · GitHub · RDoc
getoptlong	0.2.1	0.2.1	GNU getopt_long() style command-line option parsing	RubyGems · GitHub · RDoc
matrix	0.4.2	0.4.2	Support for matrices	RubyGems · GitHub · RDoc
minitest	5.25.4	5.25.4	Test/spec framework, comes with mocking and benchmark capabilities	RubyGems · GitHub · RDoc
mutex_m	0.3.0	0.3.0	A mixin that makes any object behave like a mutex	RubyGems · GitHub · RDoc
net-ftp	0.3.8	0.3.8	Support for FTP (File Transfer Protocol)	RubyGems · GitHub · RDoc
net-imap	0.5.4	0.5.4	Support for IMAP (Internet Message Access Protocol)	RubyGems · GitHub · RDoc
net-pop	0.1.2	0.1.2	Support for POP3 (Post Office Protocol)	RubyGems · GitHub · RDoc
net-smtp	0.5.0	0.5.0	Support for SMTP (Simple Mail Transfer Protocol)	RubyGems · GitHub · RDoc
nkf c	0.2.0	0.2.0	Kanji encoding converter. Can also be used via the Kconv.kconv method.	RubyGems · GitHub · RDoc
observer	0.1.2	0.1.2	Implementation of the observer pattern, a way to let interested other objects know o an objetc's updates	RubyGems · GitHub · RDoc
prime	0.1.3	0.1.3	Access to prime numbers and prime factorization	RubyGems · GitHub · RDoc
power_assert	2.0.5	2.0.5	Debug tool that displays intermediate results of a method chain	RubyGems · GitHub · RDoc
racc c	1.8.1	1.8.1	Bindings for Racc, a YACC-like LALR(1) parser generator	RubyGems · GitHub · RDoc
rake	13.2.1	13.2.1	A Ruby task runner, inspired by make	RubyGems · GitHub · RDoc
rbs	3.8.0	3.8.0	Released with Ruby 3.0, RBS is a way to declare types in Ruby. The gem allows parsing and processing type definitions written in RBS.	RubyGems · GitHub · RDoc
repl_type_completor	0.1.9	0.1.9	Creates RBS-based code-completions to enhance the IRB (or any other Ruby read-eval-print-loop) usage experience	RubyGems · GitHub · RDoc
resolv-replace	0.1.1	0.1.1	Will replace Socket's DNS with resolv	RubyGems · GitHub · RDoc
rexml	3.4.0	3.4.0	Support for XML (Extensible Markup Language)	RubyGems · GitHub · RDoc
rinda	0.2.0	0.2.0	Support fot the Linda distributed computing paradigm in drb	RubyGems · GitHub · RDoc
rss	0.3.1	0.3.1	Support for RSS (Rich Site Summary) and Atom	RubyGems · GitHub · RDoc
test-unit	3.6.7	3.6.7	A xUnit family unit testing framework (compatibility layer for minitest)	RubyGems · GitHub · RDoc
syslog c	0.2.0	0.2.0	Interface to the low-level syslog logger	RubyGems · GitHub · RDoc
typeprof	0.30.1	0.30.1	Released with Ruby 3.0, typeprof allows you to automatically generate RBS type annotations	RubyGems · GitHub · RDoc

More Standard Gems

General information about standard gems
Gem list for Ruby: 3.4.1 · 3.4.0
Gem list for Ruby: 3.3.7 · 3.3.6 · 3.3.5 · 3.3.4 · 3.3.3 · 3.3.2 · 3.3.1 · 3.3.0
Gem list for Ruby: 3.2.6 · 3.2.5 · 3.2.4 · 3.2.3 · 3.2.2 · 3.2.1 · 3.2.0
Gem list for Ruby: 3.1.6 · 3.1.5 · 3.1.4 · 3.1.3 · 3.1.2 · 3.1.1 · 3.1.0
Gem list for Ruby: 3.0.7 · 3.0.6 · 3.0.5 · 3.0.4 · 3.0.3 · 3.0.2 · 3.0.1 · 3.0.0
Gem list for Ruby: 2.7.8 · 2.7.7 · 2.7.6 · 2.7.5 · 2.7.4 · 2.7.3 · 2.7.2 · 2.7.1 · 2.7.0
Gem list for Ruby: 2.6.10 · 2.6.9 · 2.6.8 · 2.6.7 · 2.6.6 · 2.6.5 · 2.6.4 · 2.6.3 · 2.6.2 · 2.6.1 · 2.6.0
Gem list for Ruby: 2.5.9 · 2.5.8 · 2.5.7 · 2.5.6 · 2.5.5 · 2.5.4 · 2.5.3 · 2.5.2 · 2.5.1 · 2.5.0
Gem list for Ruby: 2.4.10 · 2.4.9 · 2.4.8 · 2.4.7 · 2.4.6 · 2.4.5 · 2.4.4 · 2.4.3 · 2.4.2 · 2.4.1 · 2.4.0
Gem list for Ruby: 2.3.8 · 2.3.7 · 2.3.6 · 2.3.5 · 2.3.4 · 2.3.3 · 2.3.2 · 2.3.1 · 2.3.0
Gem list for Ruby: 2.2.10 · 2.2.9 · 2.2.8 · 2.2.7 · 2.2.6 · 2.2.5 · 2.2.4 · 2.2.3 · 2.2.2 · 2.2.1 · 2.2.0
Compare versions: Main Rubies · Supported Rubies · All Rubies · 3.4 · 3.3 · 3.2 · 3.1 · 3.0 · 2.7 · 2.6 · 2.5 · 2.4 · 2.3 · 2.2
Gemified in: 3.4 - 3.3 - 3.2 · 3.1 · 3.0 · 2.7 · 2.6 · 2.5 · 2.4 · 2.3 · 2.2
List of Non-Gem Default Libraries
List of Unmaintained Default Gems
List of Removed Standard Gems