Standard Gems 2.5.0

Default Gems

Gem	Version	Description	Resources
bigdecimal c	1.3.4	Support for arbitrary-precision floating point decimal arithmetic	RubyGems, GitHub, CRuby, RDoc
cmath	1.0.0	Trigonometric and transcendental functions for complex numbers	RubyGems, GitHub, CRuby, RDoc
csv	1.0.0	Support for CSV (Comma-separated Values)	RubyGems, GitHub, CRuby (1), CRuby (2), RDoc
date c	1.0.0	The Date and DateTime classes	RubyGems, GitHub, CRuby, RDoc (1), RDoc (2)
dbm c	1.0.0	Support for DBM databases	RubyGems, GitHub, CRuby, RDoc
etc c	1.0.0	Access UNIX info from `/etc`	RubyGems, GitHub, CRuby, RDoc
fcntl c	1.0.0	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, CRuby, RDoc
fiddle c	1.0.0	Support for FFI (Foreign Function Interface)	RubyGems, GitHub, CRuby, RDoc
fileutils	1.0.2	Utilities for working with the file system, such as copying, moving, or deleting files	RubyGems, GitHub, CRuby, RDoc
gdbm c	2.0.0	Support for GDBM databases	RubyGems, GitHub, CRuby, RDoc
io-console c	0.4.6	Patches `IO` for simple and portable access to the console	RubyGems, GitHub, CRuby, RDoc
ipaddr	1.2.0	IP address manipulation (IPv4 and IPv6)	RubyGems, GitHub, CRuby, RDoc
json c	2.1.0	Support for JSON (JavaScript Object Notation)	RubyGems, GitHub, CRuby, RDoc
openssl c	2.1.0	Wraps OpenSSL for cryptographic functionality	RubyGems, GitHub, CRuby, RDoc
psych c	3.0.2	Support for YAML (YAML Ain't Markup Language)	RubyGems, GitHub, CRuby, RDoc
rdoc	6.0.1	Ruby documentation generator	RubyGems, GitHub, CRuby (1), CRuby (2), RDoc
rubygems	2.7.3	RubyGems allows you to download, install, and use Ruby software packages on your system	RubyGems, GitHub, CRuby (1), CRuby (2), RDoc
scanf	1.0.0	Pure-Ruby scanf implementation	RubyGems, GitHub, CRuby, RDoc
sdbm c	1.0.0	Support for SDBM databases	RubyGems, GitHub, CRuby, RDoc
stringio c	0.0.1	Makes strings behave like IO objects	RubyGems, GitHub, CRuby, RDoc
strscan c	1.0.0	Lexical string scanning	RubyGems, GitHub, CRuby, RDoc
webrick	1.4.2	HTTP Server	RubyGems, GitHub, CRuby (1), CRuby (2), RDoc
zlib c	1.0.0	Interface to the zlib compression library	RubyGems, GitHub, CRuby, RDoc

Bundled Gems

Gem	Version	Description	Resources
did_you_mean	1.2.0	Patches error messages to suggest correct spelling of methods/classes/variables	RubyGems, GitHub
minitest	5.10.3	Test/spec framework, comes with mocking and benchmark capabilities	RubyGems, GitHub
net-telnet	0.1.1	Support for Telnet	RubyGems, GitHub
power_assert	1.1.1	Debug tool that displays intermediate results of a method chain	RubyGems, GitHub
rake	12.3.0	A Ruby task runner, inspired by make	RubyGems, GitHub
test-unit	3.2.7	A xUnit family unit testing framework (compatibility layer for minitest)	RubyGems, GitHub
xmlrpc	0.3.0	Remote Procedure Calls via XML and HTTP	RubyGems, GitHub

More Standard Gems

General information about standard gems
Gem list for Ruby: 3.0.0 (preview)
Gem list for Ruby: 2.7.1 - 2.7.0
Gem list for Ruby: 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: 2.5.8 - 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 - 2.7 - 2.6 - 2.5 - 2.4 - 2.3 - 2.2
Gemified in: 3.0 - 2.7 - 2.6 - 2.5 - 2.4 - 2.3 - 2.2
List of unmaintained default gems and list of removed default gems
List of not-yet-gemified standard libraries