Middleware is a generalized implementation of a middleware abstraction for Ruby.

Slim is a template language for Ruby that aims to reduce the syntax to the minimum while remaining clear.

Minitest-bacon extends minitest with bacon-like functionality, making it easier to migrate test suites from bacon to minitest.

This package provides a gem to convert LaTeX input to Unicode. Its original use was as an input filter for BibTeX-Ruby, but it can be used independently to decode LaTeX. Many of the patterns used by this Ruby gem are based on François Charette's equivalent Perl module LaTeX::Decode.

Test::Unit is unit testing framework for Ruby, based on xUnit principles. These were originally designed by Kent Beck, creator of extreme programming software development methodology, for Smalltalk's SUnit. It allows writing tests, checking results and automated testing in Ruby.

rubocop is a Ruby code style checking tool. It aims to enforce the community-driven Ruby Style Guide.

This package provides a set of parsers for Accept and Accept-Language HTTP headers.

This gem is a Faraday adapter for the Net::HTTP library. Faraday is an HTTP client library that provides a common interface over many adapters.

This package provides a command line interface for running for Rack applications.

This gem provides beautiful console logging for Ruby applications. It implements fast, buffered log output and has the following features:

• Thread safe global logger with per-fiber context

• Carry along context with nested loggers

• Enable/disable log levels per class

• Detailed logging of exceptions

• Beautiful logging to the terminal or structured logging using JSON.

Assertive Expressive (AE) is an assertions library specifically designed for reuse by other test frameworks.

RubyProf is a fast code profiler for Ruby. Its features include:

Speed

Being a C extension, it is many times faster than the standard Ruby profiler.

Measurement Modes

It can measure program wall time, process time, object allocations and memory usage.

Reports

A variety of text and cross-referenced HTML reports can be generated.

Threads

Profiling multiple threads simultaneously is supported.

This module allows Ruby programs to interface with the SQLite3 database engine.

SDoc is an RDoc documentation generator to build searchable HTML documentation for Ruby code.

RSpec::Its provides the its method as a short-hand to specify the expected value of an attribute. For example, one can use its(:size)\should eq(1)\.

domain_name is a Domain name manipulation library. It parses a domain name ready for extracting the registered domain and TLD (Top Level Domain). It can also be used for cookie domain validation based on the Public Suffix List.

YARD is a documentation generation tool for the Ruby programming language. It enables the user to generate consistent, usable documentation that can be exported to a number of formats very easily, and also supports extending for custom Ruby constructs such as custom class level definitions.

Asciidoctor PDF is an extension for Asciidoctor that converts AsciiDoc documents to Portable Document Format (PDF) using the Prawn PDF library. It has features such as:

• Direct AsciiDoc to PDF conversion

• Configuration-driven theme (style and layout)

• Scalable Vector Graphics (SVG) support

• PDF document outline (i.e., bookmarks)

• Table of contents page(s)

• Document metadata (title, authors, subject, keywords, etc.)

• Internal cross reference links

• Syntax highlighting with Rouge, Pygments, or CodeRay

• Page numbering

• Customizable running content (header and footer)

• “Keep together” blocks (i.e., page breaks avoided in certain block content)

• Orphaned section titles avoided

• Autofit verbatim blocks (as permitted by base_font_size_min setting)

• Table border settings honored

• Font-based icons

• Custom TrueType (TTF) fonts

• Double-sided printing mode (margins alternate on recto and verso pages)

This library provides methods to encode and decode Ascii85 binary-to-text encoding. The main modern use of Ascii85 is in PostScript and Portable Document Format (PDF) file formats.

This gem implements bcrypt_pbkdf, which is a variant of PBKDF2 (Password-Based Key Derivation Function 2) with bcrypt-based pseudorandom function. This is currently used by net-ssh to read password encrypted Ed25519 keys.

Connection_pool provides a generic connection pooling interface for Ruby programs.

Nenv provides a convenient wrapper for Ruby's ENV to modify and inspect the environment.

This package provides a class-level mixin to make managing fiber-local state easy. It provides easy access to a fiber-local state from a fiber, and defaults to a shared thread-local state.

Haml is a layer on top of HTML or XML that is designed to express the structure of documents using indentation rather than closing tags. It was originally envisioned as a plugin for Ruby on Rails, but it can function as a stand-alone templating engine.