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.

A fast XML parser and object serializer that uses only standard C lib. Optimized XML (Ox), as the name implies was written to provide speed optimized XML handling. It was designed to be an alternative to Nokogiri and other Ruby XML parsers for generic XML parsing and as an alternative to Marshal...

A fast XML parser and object serializer that uses only standard C lib. Optimized XML (Ox), as the name implies was written to provide speed optimized XML handling. It was designed to be an alternative to Nokogiri and other Ruby XML parsers for generic XML parsing and as an alternative to Marshal...

Xsv is a fast, lightweight parser for Office Open XML spreadsheet files (commonly known as Excel or .xlsx files). It strives to be minimal in the sense that it provides nothing a CSV reader wouldn't, meaning it on...

BibTeX-Ruby is the Rubyist's swiss-army-knife for all things BibTeX. It includes a parser for all common BibTeX objects (@string, @preamble, @comment and regular entries) and a sophisticated name parser that tokenizes correctly formatted names; BibTeX-Ruby recognizes BibTeX string replacements, j...

Saxerator is a streaming xml-to-hash parser designed for working with very large xml files by giving you Enumerable access to manageable chunks of the document.

Rack Middleware for parsing post body data for json, xml and various content types

risu is a Nessus .nessus XML parser and report generation tool

eBayR is a gem that makes it (relatively) easy to use the eBay Trading API from Ruby. Includes a self-contained XML parser, a flexible callback system, and a command-line client which aids integration into other projects.

Rfm is a standalone database adapter for Filemaker server. Ginjo-rfm features multiple xml parser support, ActiveModel integration, field mapping, compound queries, logging, scoping, and a configuration framework.

A XML/HTML parser for RubyMotion, with nokogiri style interface.

A streaming XML parser which builds objects and passes them to a collecter as they are ready. Based upon Nokogiri SAX parsing functionality.

Green Button Data is a Ruby gem that can consume Green Button APIs and parse the Green Button data XML schema very quickly. It uses an event-driven SAX parser which parses XML data without building an entire DOM in memory.

Fast big data BLAST XML parser and library; this libxml2 based version is 50x faster than BioRuby and comes with a nice CLI

A Ruby parser and full API for the Citation Style Language (CSL), an open XML-based language to describe the formatting of citations and bibliographies.

Bible reference parser returns normalized sets of ranges, ideal for querying a database or XML data source such as WEB in USFX.

XML/HTML Parser

A Rack middleware that parses the POST or PUT body for JSON or XML content to a Hash and puts it into the rack.request.form_hash. Most frameworks get the params hash from there. Uses ActiveSupport and the respective parsers for parsing. So you can set it up to use Nokogiri and YajL. Useful for ex...

Saxy finds object definitions in XML files and translates them into Ruby objects. It uses SAX parser under the hood, which means that it doesn't load the whole XML file into memory. It goes once through it and yields objects along the way.

XML parser plugin is Embulk plugin to fetch entries in xml format.