Nokogiri (鋸) makes it easy and painless to work with XML and HTML from Ruby. It provides a sensible, easy-to-understand API for reading, writing, modifying, and querying documents. It is fast and standards-compliant by relying on native parsers like libxml2, libgumbo, or xerces.

Ruby library to interface with the SQLite3 database engine (http://www.sqlite.org). Precompiled binaries are available for common platforms for recent versions of Ruby.

Backup is a RubyGem, written for UNIX-like operating systems, that allows you to easily perform backup operations on both your remote and local environments. It provides you with an elegant DSL in Ruby for modeling your backups. Backup has built-in support for various databases, storage protocols...

Ruby-GPGME is a Ruby language binding of GPGME (GnuPG Made Easy). GnuPG Made Easy (GPGME) is a library designed to make access to GnuPG easier for applications. It provides a High-Level Crypto API for encryption, decryption, signing, signature verification and key management.

TinyTDS - A modern, simple and fast FreeTDS library for Ruby using DB-Library. Developed for the ActiveRecord SQL Server adapter.

Ruby bindings to RE2, "a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python".

Modern Kafka client library for Ruby based on librdkafka

File Magic in Ruby. Simple interface to libmagic for Ruby Programming Language.

Modern Kafka client library for Ruby based on librdkafka

FXRuby is the Ruby binding to the FOX GUI toolkit.

LIBUSB is a Ruby binding that gives Ruby programmers access to arbitrary USB devices

Ruby bindings for jq

Git submodule support for Capistrano 3.0-3.6. For Capistrano 3.7+ use new plugin https://github.com/ekho/capistrano-git-with-submodules

This library allows you to write HTTP/2 clients and servers. It is a wrapper around nghttp2.

Native extension gem for secp256k1 ECDSA and Schnorr signatures. Wraps libsecp256k1 natively without any need for FFI.

Part of a project to explain how Ruby C extensions work.

EMF to SVG conversion in Ruby.

Wraps the official C++ implementation of Jsonnet

Kafka provides binding to librdafka as well as a default producer and consumer implementation.

Ruby bindings for OSRM’s C++ API, providing faster and more customizable interaction with OSRM than HTTP based API. This gem requires native dependencies, you can find list of dependencies in README.