The following libraries were made standard gems with Ruby 2.5:
Default Gems
| Gem | Description | Resources |
|---|---|---|
| cmath | Trigonometric and transcendental functions for complex numbers | RubyGems, GitHub, MRI, RDoc |
| csv | Support for CSV (Comma-separated Values) | RubyGems, GitHub, MRI (1), MRI (2), RDoc |
| date c | The Date and DateTime classes | RubyGems, GitHub, MRI, RDoc (1), RDoc (2) |
| dbm c | Support for DBM databases | RubyGems, GitHub, MRI, RDoc |
| etc c | Access UNIX info from /etc |
RubyGems, GitHub, MRI, RDoc |
| fcntl c | 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, MRI, RDoc |
| fiddle c | Support for FFI (Foreign Function Interface) | RubyGems, GitHub, MRI, RDoc |
| fileutils | Utilities for working with the file system, such as copying, moving, or deleting files | RubyGems, GitHub, MRI, RDoc |
| gdbm c | Support for GDBM databases | RubyGems, GitHub, MRI, RDoc |
| ipaddr | IP address manipulation (IPv4 and IPv6) | RubyGems, GitHub, MRI, RDoc |
| scanf | Pure-Ruby scanf implementation | RubyGems, GitHub, MRI, RDoc |
| sdbm c | Support for SDBM databases | RubyGems, GitHub, MRI, RDoc |
| stringio c | Makes strings behave like IO objects | RubyGems, GitHub, MRI, RDoc |
| strscan c | Lexical string scanning | RubyGems, GitHub, MRI, RDoc |
| zlib c | Interface to the zlib compression library | RubyGems, GitHub, MRI, RDoc |
Bundled Gems
No bundled gems were introduced in 2.5.
More Standard Gems
- General information about standard gems
- Gem list for Ruby: 2.6.3 - 2.6.2 - 2.6.1 - 2.6.0
- Gem list for Ruby: 2.5.5 - 2.5.4 - 2.5.3 - 2.5.2 - 2.5.1 - 2.5.0
- Gem list for Ruby: 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 - 2.6 - 2.5 - 2.4 - 2.3 - 2.2
- Gemified in: 2.6 - 2.5 - 2.4 - 2.3 - 2.2
- List of not-yet-gemified standard libraries
