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Online tools for developers, including formatters (JSON, XML, HTML, SQL, etc.), minifiers (JavaScript, CSS), validators, compactors and many more!

Online tools to handle special characters on the web, in code and unicode reference charts.

The blog of Peter Coles, featuring adventures in the web, programming, and New York City. Latest post: HTML5ify your existing code base

HTML and XHTML character escape codes and entity references including copyright, trademark and currency symbols

SwRI Planetary Science Directorate is a center for the study of solar system science and space mission operations

The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.

Oracle Documentation

A World Wide Web-based communications company offering online publications related to Internet use, development, reference, and understanding.

Free html tutorials and help, images, color codes and more for the web developer. Featuring tutorials on HTML tags, programming, basics, JavaScript, frames, hex codes and more. Our weekly newsletter provides the latest information for developers.