| 1 | 17 | 6 | json | A JSON implementation as a JRuby extension. |
| 2 | 63 | 16 | rexml | An XML toolkit for Ruby |
| 3 | 100 | 99 | msgpack | MessagePack is a binary-based efficient object serialization library. It enables to exc... |
| 4 | 118 | 61 | webrick | WEBrick is an HTTP server toolkit that can be configured as an HTTPS server, a proxy se... |
| 5 | 221 | 66 | net-imap | Ruby client api for Internet Message Access Protocol |
| 6 | 287 | 103 | net-protocol | The abstract interface for net-* client. |
| 7 | 296 | 22 | base64 | Support for encoding and decoding binary data using a Base64 representation. |
| 8 | 352 | 100 | date | A subclass of Object includes Comparable module for handling dates. |
| 9 | 428 | 205 | matrix | An implementation of Matrix and Vector classes. |
| 10 | 633 | 138 | irb | Interactive Ruby command-line tool for REPL (Read Eval Print Loop). |
| 11 | 723 | 1,417 | json_pure | This is a JSON implementation in pure Ruby. |
| 12 | 735 | 334 | strscan | Provides lexical scanning operations on a String. |
| 13 | 740 | 292 | optparse | OptionParser is a class for command-line option analysis. |
| 14 | 747 | 88 | drb | Distributed object system for Ruby |
| 15 | 777 | 34 | logger | Provides a simple logging utility for outputting messages. |
| 16 | 827 | 387 | openssl | OpenSSL for Ruby provides access to SSL/TLS and general-purpose cryptography based on t... |
| 17 | 834 | 508 | sigdump | Setup signal handler which dumps backtrace of running threads and number of allocated o... |
| 18 | 839 | 294 | debug | Debugging functionality for Ruby. This is completely rewritten debug.rb which was conta... |
| 19 | 853 | 177 | stringio | Pseudo `IO` class from/to `String`. |
| 20 | 871 | 406 | sync | A module that provides a two-phase lock with a counter. |
| 21 | 885 | 117 | net-http | HTTP client api for Ruby. |
| 22 | 891 | 129 | csv | The CSV library provides a complete interface to CSV files and data. It offers tools to... |
| 23 | 962 | 134 | mutex_m | Mixin to extend objects to be handled like a Mutex. |
| 24 | 993 | 997 | e2mmap | Module for defining custom exceptions with specific messages. |
| 25 | 1,090 | 875 | set | Provides a class to deal with collections of unordered, unique values |
| 26 | 1,209 | 249 | nkf | Ruby extension for Network Kanji Filter |
| 27 | 1,407 | 1,761 | thwait | Watches for termination of multiple threads. |
| 28 | 1,495 | 123 | securerandom | Interface for secure random number generator. |
| 29 | 1,557 | 1,243 | digest | Provides a framework for message digest libraries. |
| 30 | 1,644 | 2,132 | strptime | a fast strptime/strftime engine which uses VM. |
| 31 | 1,741 | 1,372 | net-ftp | Support for the File Transfer Protocol. |
| 32 | 1,757 | 2,059 | iconv | iconv wrapper library |
| 33 | 1,824 | 1,540 | fileutils | Several file utility methods for copying, moving, removing, etc. |
| 34 | 1,845 | 1,699 | rss | Family of libraries that support various formats of XML "feeds". |
| 35 | 1,871 | 2,318 | cool.io | Cool.io provides a high performance event framework for Ruby which uses the libev C lib... |
| 36 | 1,931 | 233 | ostruct | Class to build custom data structures, similar to a Hash. |
| 37 | 2,032 | 1,675 | forwardable | Provides delegation of specified methods to a designated object. |
| 38 | 2,167 | 1,085 | zlib | Ruby interface for the zlib compression/decompression library |
| 39 | 2,191 | 1,364 | time | Extends the Time class with methods for parsing and conversion. |
| 40 | 2,372 | 3,082 | english | Require 'English.rb' to reference global variables with less cryptic names. |
| 41 | 2,636 | 2,061 | io-wait | Waits until IO is readable or writable without blocking. |
| 42 | 2,655 | 1,998 | scanf | scanf is an implementation of the C function scanf(3). |
| 43 | 2,675 | 1,557 | erb | An easy to use but powerful templating system for Ruby. |
| 44 | 2,774 | 3,277 | did_you_mean | The gem that has been saving people from typos since 2014. |
| 45 | 2,808 | 1,428 | fiddle | A libffi wrapper for Ruby. |
| 46 | 2,859 | 1,805 | resolv | Thread-aware DNS resolver library in Ruby. |
| 47 | 3,157 | 1,757 | abbrev | Calculates a set of unique abbreviations for a given set of strings |
| 48 | 3,253 | 1,935 | resolv-replace | Replace Socket DNS with Resolv. |
| 49 | 3,432 | 4,376 | td-client | Treasure Data API library for Ruby |
| 50 | 3,646 | 2,017 | syslog | Ruby interface for the POSIX system logging facility. |
| 51 | 3,722 | 2,210 | tempfile | A utility class for managing temporary files. |
| 52 | 3,797 | 2,534 | etc | Provides access to information typically stored in UNIX /etc directory. |
| 53 | 3,818 | 2,357 | rinda | The Linda distributed computing paradigm in Ruby. |
| 54 | 3,902 | 2,229 | open-uri | An easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP. |
| 55 | 4,779 | 10,140 | td | CLI to manage data on Treasure Data, the Hadoop-based cloud data warehousing |
| 56 | 4,783 | 6,392 | td-logger | Treasure Data logging library |
| 57 | 4,894 | 302 | pp | Provides a PrettyPrinter for Ruby objects |
| 58 | 4,971 | 2,497 | shellwords | Manipulates strings with word parsing rules of UNIX Bourne shell. |
| 59 | 5,066 | 5,914 | shell | An idiomatic Ruby interface for common UNIX shell commands. |
| 60 | 5,159 | 325 | prettyprint | Implements a pretty printing algorithm for readable structure. |
| 61 | 5,506 | 2,398 | tsort | Topological sorting using Tarjan's algorithm |
| 62 | 5,907 | 3,080 | pathname | Representation of the name of a file or directory on the filesystem |
| 63 | 6,230 | 4,759 | fcntl | Loads constants defined in the OS fcntl.h C header file |
| 64 | 6,280 | 6,067 | dbm | Provides a wrapper for the UNIX-style Database Manager Library |
| 65 | 8,026 | 4,894 | tmpdir | Extends the Dir class to manage the OS temporary file path. |
| 66 | 8,179 | 5,540 | cmath | CMath is a library that provides trigonometric and transcendental functions for complex... |
| 67 | 8,248 | 4,438 | un | Utilities to replace common UNIX commands |
| 68 | 8,455 | 11,400 | gdbm | Ruby extension for GNU dbm. |
| 69 | 8,533 | 4,295 | find | This module supports top-down traversal of a set of file paths. |
| 70 | 9,058 | 4,438 | weakref | Allows a referenced object to be garbage-collected. |
| 71 | 9,393 | 10,748 | perfectqueue | Highly available distributed cron built on RDBMS |
| 72 | 9,708 | 5,088 | io-nonblock | Enables non-blocking mode with IO class |
| 73 | 12,005 | 34,814 | ext_monitor | faster MonitorMixin implementation with C extension which is introduced in Ruby 2.7 |
| 74 | 13,303 | 6,473 | sdbm | Provides a simple file-based key-value store with String keys and values. |
| 75 | 14,630 | 17,479 | fluent-plugin-metricsense | MetricSense - application metrics aggregation plugin for Fluentd |
| 76 | 16,455 | 2,374 | win32ole | Provides an interface for OLE Automation in Ruby |
| 77 | 16,759 | 31,592 | perfectsched | Highly available distributed cron built on RDBMS |
| 78 | 68,667 | 25,840 | lrama | LALR (1) parser generator written by Ruby |
| 79 | 73,952 | 59,101 | traceroute53 | A tool to investigate Route53, ELB, EC2 and Security Groups |
| 80 | 156,437 | 46,434 | gohttp | an http library with go. |
| 81 | 163,629 | 59,101 | laplace | fast method tracing |
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