HEATKEYS

A Programmer

Tools you can use, by Jonathan Hedley

Helping website owners and SEO services get top rankings since 1996. The best SEO tools & training using only ethical white hat SEO techniques.

CSE HTML Validator is a powerful and easy to use offline HTML, XHTML, CSS, JavaScript, and PHP syntax checker, HTML validator, XHTML validator, accessibility checker, and link checker for Microsoft Windows. A free edition is also available.

W3C

HTML Kit is a free, full-featured, customizable, multi-purpose editor designed to help HTML, XHTML and XML authors to create and publish web pages. Newcomers can benefit from letting it point out errors and provide suggestions on how to create sta...

Total Validator is an (X)HTML validator, an accessibility validator, a spell checker, and a broken links checker all rolled into one tool allowing one-click validation of your entire site.

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

SitePoint.com - With a vast variety of web design tutorials and articles coupled with a vibrant and well informed community, SitePoint the natural place to go to grow your online business

Altova XMLSpy XML editor, plus other leading XML, data management, UML, and Web services software tools for application, web site, and database development, data conversion, and more.