A fast, high-level web crawling and web scraping framework
Eases DOM navigation for HTML and XML documents
Style guides for Google-originated open source projects
A popular high-performance JSON framework for .NET
The lxml XML toolkit for Python
Test automation made simple
A node.js library for testing modern web applications
ANT4DOCBOOK is an ANT task for DOCBOOK
Java GUI-Less browser, supporting JavaScript, to run against web pages
console tools, batch scripts, shell scripts, shell tools, utilities
Development toolkit for Web Services and XML data bindings for C & C++
Wapiti is a web-application vulnerability scanner
Acceptance test framework for web applications
The Saxon XSLT and XQuery processor, developed by Saxonica
eXist-db is a feature rich Open Source native XML database
Embeddable JSON Database engine C library
Simple, lightweight XML parser in C, statically or dynamically linked.
A reactive caching and data-binding framework
Dynamically generate documents from templates
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
Represents JSON doc as a nodes tree for transforms like XPATH & XSLT.