Warning: This Ruby version has not been released, yet. Standard gem data might still change.
Also see: Gems introduced and removed in Ruby 4.0
Default Gems
| Default Gem | 4.0.0 | 3.4.8 | Description | Resources |
|---|---|---|---|---|
| bundler | 4.0.3 | 2.6.9 | Bundler is the local package manager for Ruby applications | RubyGems · GitHub · RDoc · CRuby |
| date c | 3.5.1 | 3.4.1 | The Date and DateTime classes | RubyGems · GitHub · RDoc (1) · RDoc (2) · CRuby · JRuby (1) · JRuby (2) · JRuby (3) |
| delegate | 0.6.1 | 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 | 3.2.1 | 3.2.0 | Provides common hash functions like MD5, SHA1, SHA2, or RIPEMD-160 | RubyGems · GitHub · RDoc · CRuby · JRuby (1) |
| english | 0.8.1 | 0.8.0 | Readable aliases for special global variables | RubyGems · GitHub · RDoc · CRuby · JRuby |
| erb | 6.0.1 | 4.0.4 | Templating engine for Ruby | RubyGems · GitHub · RDoc · CRuby |
| error_highlight | 0.7.1 | 0.7.0 | Improves error messages with additional debug info | RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) |
| etc c | 1.4.6 | 1.4.6 | Access UNIX info from /etc |
RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2) |
| fcntl c | 1.3.0 | 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) |
| fileutils | 1.8.0 | 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 | 1.4.0 | 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 | 0.8.2 | 0.8.1 | Patches IO for simple and portable access to the console |
RubyGems · GitHub · RDoc · CRuby |
| io-nonblock c | 0.3.2 | 0.3.2 | Allows to work with IO streams in a non-blocking way |
RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2) |
| io-wait c | 0.4.0 | 0.3.2 | Adds methods to wait until an IO stream becomes readable or writable |
RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2) |
| ipaddr | 1.2.8 | 1.2.7 | IP address manipulation (IPv4 and IPv6) | RubyGems · GitHub · RDoc · CRuby |
| json c | 2.18.0 | 2.9.1 | Support for JSON (JavaScript Object Notation) | RubyGems · GitHub · RDoc · CRuby |
| net-http | 0.9.1 | 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 | 4.0.0 | 3.3.1 | 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 | 0.8.1 | 0.6.0 | Command-line option parser | RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · CRuby (3) |
| pp | 0.6.3 | 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 |
| prism c | 1.7.0 | 1.5.2 | 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) |
| psych c | 5.3.1 | 5.2.2 | Support for YAML (YAML Ain't Markup Language) | RubyGems · GitHub · RDoc · CRuby |
| resolv c | 0.7.0 | 0.6.2 | Thread-aware DNS resolver | RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · 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 | 4.0.3 | 3.6.9 | RubyGems allows you to download, install, and use Ruby software packages on your system. It can connect to gem servers like rubygems.org or gem.coop to retrieve latest gems. | 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) |
| 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 | 3.2.0 | 3.1.2 | Makes strings behave like IO objects | RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2) |
| strscan c | 3.1.6 | 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 | 0.4.2 | 0.4.1 | Adds more methods to Time |
RubyGems · GitHub · RDoc · CRuby |
| timeout | 0.6.0 | 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 | 1.1.1 | 1.0.4 | URI/URL manipulation | RubyGems · GitHub · RDoc · CRuby (1) · CRuby (2) · JRuby (1) · JRuby (2) |
| weakref | 0.1.4 | 0.1.3 | Explicitly allow objects to be garbage collected | RubyGems · GitHub · RDoc · CRuby · JRuby |
| win32-registry | 0.1.2 | - | Allows you to call Windows Registry APIs | RubyGems · GitHub · CRuby |
| 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 | 3.2.2 | 3.2.1 | Interface to the zlib compression library | RubyGems · GitHub · RDoc · CRuby · JRuby (1) · JRuby (2) |
Bundled Gems
| Bundled Gem | 4.0.0 | 3.4.8 | Description | Resources |
|---|---|---|---|---|
| abbrev | 0.1.2 | 0.1.2 | Finds the shortest unique abbreviation amongst many strings | RubyGems · GitHub · RDoc |
| base64 | 0.3.0 | 0.2.0 | Encodes and decodes strings to a Base64 representation. Implemented as a small wrapper around String#unpack | RubyGems · GitHub · RDoc |
| benchmark | 0.5.0 | - | Benchmark utility: Measures and reports the time used to execute code | RubyGems · GitHub · RDoc |
| bigdecimal c | 4.0.1 | 3.1.8 | Support for arbitrary-precision floating point decimal arithmetic | RubyGems · GitHub · RDoc |
| csv | 3.3.5 | 3.3.2 | Support for CSV (Comma-separated Values) | RubyGems · GitHub · RDoc |
| debug c | 1.11.0 | 1.11.0 | Command-line debugger | RubyGems · GitHub · RDoc |
| drb | 2.2.3 | 2.2.1 | Distributed object system for Ruby | RubyGems · GitHub · RDoc |
| fiddle c | 1.1.8 | - | Support for FFI (Foreign Function Interface) | RubyGems · GitHub · RDoc |
| getoptlong | 0.2.1 | 0.2.1 | GNU getopt_long() style command-line option parsing | RubyGems · GitHub · RDoc |
| irb | 1.16.0 | - | Interactive Ruby Console (REPL) | RubyGems · GitHub · RDoc |
| logger | 1.7.0 | - | Logging utility | RubyGems · GitHub · RDoc |
| matrix | 0.4.3 | 0.4.2 | Support for matrices | RubyGems · GitHub · RDoc |
| minitest | 5.27.0 | 5.25.4 | Test/spec framework, comes with mocking and benchmark capabilities | RubyGems · GitHub · RDoc |
| mutex_m | 0.4.0 | 0.3.0 | A mixin that makes any object behave like a mutex | RubyGems · GitHub · RDoc |
| net-ftp | 0.3.9 | 0.3.8 | Support for FTP (File Transfer Protocol) | RubyGems · GitHub · RDoc |
| net-imap | 0.6.1 | 0.5.8 | 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 | 0.5.1 | 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 |
| ostruct | 0.6.3 | - | Wrapper around Hash which lets you read and set attributes with a method-based API | RubyGems · GitHub · RDoc |
| power_assert | 3.0.1 | 2.0.5 | Debug tool that displays intermediate results of a method chain | RubyGems · GitHub · RDoc |
| prime | 0.1.4 | 0.1.3 | Access to prime numbers and prime factorization | RubyGems · GitHub · RDoc |
| pstore | 0.2.0 | - | Transactional file storage for Ruby objects | 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 | 13.3.1 | 13.2.1 | A Ruby task runner, inspired by make | RubyGems · GitHub · RDoc |
| rbs | 3.10.0 | 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 |
| rdoc | 6.17.0 | - | Ruby documentation generator | RubyGems · GitHub · RDoc |
| readline | 0.0.4 | - | If available, readline-ext will be loaded, or (Ruby-only) bundled gem reline will be used. | RubyGems · GitHub · RDoc |
| reline | 0.6.3 | - | Ruby-only implementation of GNU Readline / NetBSD Editline | RubyGems · GitHub · RDoc |
| repl_type_completor | 0.1.12 | 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 | 3.4.4 | 3.4.4 | 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 | 3.7.3 | 3.6.7 | A xUnit family unit testing framework (compatibility layer for minitest) | RubyGems · GitHub · RDoc |
| syslog c | 0.3.0 | 0.2.0 | Interface to the low-level syslog logger | RubyGems · GitHub · RDoc |
| typeprof | 0.31.0 | 0.30.1 | Released with Ruby 3.0, typeprof allows you to automatically generate RBS type annotations | RubyGems · GitHub · RDoc |
| win32ole c | 1.9.2 | - | Windows OLE automation interface | RubyGems · GitHub · RDoc |
More Standard Gems
- General information about standard gems
- Gem list for Ruby: 4.0.0 (preview)
- Gem list for Ruby: 3.4.8 · 3.4.7 · 3.4.6 · 3.4.5 · 3.4.4 · 3.4.3 · 3.4.2 · 3.4.1 · 3.4.0
- Gem list for Ruby: 3.3.10 · 3.3.9 · 3.3.8 · 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: 3.2.9 · 3.2.8 · 3.2.7 · 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: 3.1.7 · 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: 4.0 - 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