| 1 | 18 | 20 | json | A JSON implementation as a JRuby extension. |
| 2 | 93 | 21 | rexml | An XML toolkit for Ruby |
| 3 | 104 | 89 | msgpack | MessagePack is a binary-based efficient object serialization library. It enables to exc... |
| 4 | 169 | 40 | webrick | WEBrick is an HTTP server toolkit that can be configured as an HTTPS server, a proxy se... |
| 5 | 618 | 1,756 | json_pure | This is a JSON implementation in pure Ruby. |
| 6 | 629 | 90 | net-imap | Ruby client api for Internet Message Access Protocol |
| 7 | 662 | 156 | net-protocol | The abstract interface for net-* client. |
| 8 | 831 | 205 | matrix | An implementation of Matrix and Vector classes. |
| 9 | 895 | 626 | sigdump | Setup signal handler which dumps backtrace of running threads and number of allocated o... |
| 10 | 935 | 163 | date | A subclass of Object includes Comparable module for handling dates. |
| 11 | 964 | 549 | openssl | OpenSSL for Ruby provides access to SSL/TLS and general-purpose cryptography based on t... |
| 12 | 1,020 | 900 | sync | A module that provides a two-phase lock with a counter. |
| 13 | 1,036 | 440 | optparse | OptionParser is a class for command-line option analysis. |
| 14 | 1,053 | 410 | e2mmap | Module for defining custom exceptions with specific messages. |
| 15 | 1,154 | 672 | set | Provides a class to deal with collections of unordered, unique values |
| 16 | 1,157 | 392 | irb | Interactive Ruby command-line tool for REPL (Read Eval Print Loop). |
| 17 | 1,344 | 310 | debug | Debugging functionality for Ruby. This is completely rewritten debug.rb which was conta... |
| 18 | 1,392 | 600 | thwait | Watches for termination of multiple threads. |
| 19 | 1,511 | 1,235 | strptime | a fast strptime/strftime engine which uses VM. |
| 20 | 1,532 | 1,694 | strscan | Provides lexical scanning operations on a String. |
| 21 | 1,556 | 1,399 | digest | Provides a framework for message digest libraries. |
| 22 | 1,591 | 1,406 | iconv | iconv wrapper library |
| 23 | 1,597 | 1,922 | logger | Provides a simple logging utility for outputting messages. |
| 24 | 1,617 | 1,737 | csv | The CSV library provides a complete interface to CSV files and data. It offers tools to... |
| 25 | 1,777 | 1,384 | cool.io | Cool.io provides a high performance event framework for Ruby which uses the libev C lib... |
| 26 | 1,802 | 425 | stringio | Pseudo `IO` class from/to `String`. |
| 27 | 2,113 | 1,299 | fileutils | Several file utility methods for copying, moving, removing, etc. |
| 28 | 2,115 | 3,287 | english | Require 'English.rb' to reference global variables with less cryptic names. |
| 29 | 2,245 | 648 | rss | Family of libraries that support various formats of XML "feeds". |
| 30 | 2,258 | 588 | net-ftp | Support for the File Transfer Protocol. |
| 31 | 2,495 | 2,173 | did_you_mean | The gem that has been saving people from typos since 2014. |
| 32 | 2,713 | 2,290 | io-wait | Waits until IO is readable or writable without blocking. |
| 33 | 2,789 | 1,943 | zlib | Ruby interface for the zlib compression/decompression library |
| 34 | 3,007 | 2,004 | scanf | scanf is an implementation of the C function scanf(3). |
| 35 | 3,023 | 182 | base64 | Support for encoding and decoding binary data using a Base64 representation. |
| 36 | 3,042 | 1,167 | time | Extends the Time class with methods for parsing and conversion. |
| 37 | 3,051 | 2,743 | forwardable | Provides delegation of specified methods to a designated object. |
| 38 | 3,112 | 1,813 | net-http | HTTP client api for Ruby. |
| 39 | 3,127 | 6,462 | td-client | Treasure Data API library for Ruby |
| 40 | 3,388 | 2,369 | resolv | Thread-aware DNS resolver library in Ruby. |
| 41 | 3,664 | 2,199 | securerandom | Interface for secure random number generator. |
| 42 | 3,704 | 2,644 | fiddle | A libffi wrapper for Ruby. |
| 43 | 3,761 | 3,071 | etc | Provides access to information typically stored in UNIX /etc directory. |
| 44 | 4,277 | 2,708 | erb | An easy to use but powerful templating system for Ruby. |
| 45 | 4,325 | 2,911 | ostruct | Class to build custom data structures, similar to a Hash. |
| 46 | 4,332 | 7,472 | td | CLI to manage data on Treasure Data, the Hadoop-based cloud data warehousing |
| 47 | 4,437 | 8,122 | td-logger | Treasure Data logging library |
| 48 | 4,660 | 3,296 | open-uri | An easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP. |
| 49 | 4,940 | 2,145 | tempfile | A utility class for managing temporary files. |
| 50 | 5,265 | 2,766 | shell | An idiomatic Ruby interface for common UNIX shell commands. |
| 51 | 5,991 | 6,989 | dbm | Provides a wrapper for the UNIX-style Database Manager Library |
| 52 | 6,321 | 4,160 | mutex_m | Mixin to extend objects to be handled like a Mutex. |
| 53 | 6,889 | 5,204 | fcntl | Loads constants defined in the OS fcntl.h C header file |
| 54 | 6,970 | 2,946 | tsort | Topological sorting using Tarjan's algorithm |
| 55 | 7,041 | 3,628 | shellwords | Manipulates strings with word parsing rules of UNIX Bourne shell. |
| 56 | 7,316 | 5,519 | pp | Provides a PrettyPrinter for Ruby objects |
| 57 | 7,438 | 3,296 | pathname | Representation of the name of a file or directory on the filesystem |
| 58 | 7,549 | 3,852 | resolv-replace | Replace Socket DNS with Resolv. |
| 59 | 7,597 | 10,657 | gdbm | Ruby extension for GNU dbm. |
| 60 | 8,401 | 5,185 | prettyprint | Implements a pretty printing algorithm for readable structure. |
| 61 | 8,581 | 7,176 | perfectqueue | Highly available distributed cron built on RDBMS |
| 62 | 8,944 | 4,636 | nkf | Ruby extension for Network Kanji Filter |
| 63 | 9,051 | 5,408 | cmath | CMath is a library that provides trigonometric and transcendental functions for complex... |
| 64 | 9,359 | 4,335 | drb | Distributed object system for Ruby |
| 65 | 10,282 | 6,431 | un | Utilities to replace common UNIX commands |
| 66 | 10,515 | 6,665 | tmpdir | Extends the Dir class to manage the OS temporary file path. |
| 67 | 10,789 | 11,108 | ext_monitor | faster MonitorMixin implementation with C extension which is introduced in Ruby 2.7 |
| 68 | 12,395 | 7,285 | find | This module supports top-down traversal of a set of file paths. |
| 69 | 12,498 | 6,147 | abbrev | Calculates a set of unique abbreviations for a given set of strings |
| 70 | 13,171 | 6,410 | weakref | Allows a referenced object to be garbage-collected. |
| 71 | 13,668 | 46,889 | fluent-plugin-metricsense | MetricSense - application metrics aggregation plugin for Fluentd |
| 72 | 15,129 | 6,847 | io-nonblock | Enables non-blocking mode with IO class |
| 73 | 15,594 | 7,064 | syslog | Ruby interface for the POSIX system logging facility. |
| 74 | 15,700 | 12,544 | perfectsched | Highly available distributed cron built on RDBMS |
| 75 | 16,166 | 7,999 | rinda | The Linda distributed computing paradigm in Ruby. |
| 76 | 18,503 | 5,985 | sdbm | Provides a simple file-based key-value store with String keys and values. |
| 77 | 51,742 | 7,472 | win32ole | Provides an interface for OLE Automation in Ruby |
| 78 | 74,934 | 89,890 | traceroute53 | A tool to investigate Route53, ELB, EC2 and Security Groups |
| 79 | 154,113 | 46,889 | gohttp | an http library with go. |
| 80 | 155,843 | 20,572 | lrama | LALR (1) parser generator written by Ruby |
| 81 | 161,661 | 89,890 | laplace | fast method tracing |
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