The lxml XML toolkit for Python
Go package for easily rendering JSON, XML, binary data, and HTML
Fast streaming XML parser written in C99 with >90% test coverage
The Microsoft Build Engine (MSBuild) build platform for .NET and VS
A library to handle Apple Property List format in binary or XML
An extensible multilanguage static code analyzer
MyBatis SQL mapper framework for Java
Simple REST and HTTP API Client for .NET
High performance, open source universal RPC framework
Command-line XML and HTML beautifier and content extractor
The fast & forgiving HTML and XML parser
Generate C# classes from XML Schema files
A popular high-performance JSON framework for .NET
A fast and lightweight IDE
Eases DOM navigation for HTML and XML documents
MLT Multimedia Framework
jQuery plugin to export a html table to JSON, XML, CSV, TSV, TXT, SQL
Collection, processing, and rendering functionality for PHP code
Helps you find, load, combine, autofill and validate configuration
Open-source, cross platform Qt based IDE for reverse-engineering
Jekyll HTML/XML/CSS/JS Minifier utilising yui-compressor
A fast, high-level web crawling and web scraping framework
YamlDotNet is a .NET library for YAML
Yoast SEO for WordPress
Pure Clojure/Script logging library