Nokogiri (鋸) makes it easy and painless to work with XML and HTML from Ruby.

Extensible data integration Java framework for building XML and non-XML fragment-based applications

Collection of parsers written in JavaScript

Lightweight library for parsing, traversing, and transforming XML in Dart.

Streaming JSON parser for Elixir

A WHATWG-compliant HTML5 tokenizer and tag soup parser

A SAX-based XML parser for parsing large files into manageable chunks

EDIReader is a flexible and lightweight EDI parser, written in pure Java with many integration options. It has handled millions of transactions in a wide variety of products, services, industries, platforms, and custom integrations. Available as the open source Community Edition and the Premium Edition with added-value modules.

GrammarViz 2.0 public release:

Fast Haskell XML parser

Go library for XML SAX (Simple API for XML) parsing

SAX-VSM public release, visit our website for detail

Java implementation of SAX, HOT-SAX, and EMMA

Multi-NILM: Multi Label Non Intrusive Load Monitoring

gosax is a basic wrapper for stream parsing of XML (SAX) Go

SAX, HOT-SAX, VSM, SAX-VSM, RePair and RRA in R (Rcpp)

A tiny but fast java event-style markup parser.

a fresh attempt at a 4chan userstyle

C XML Minimalistic Library (CXML) - An XML library for C with a focus on simplicity and ease of use.

Lightning fast JSON parser.