Back in 2012, Mozilla launched Thimble, an online code editor for teaching the basics of HTML, CSS and JavaScript. Over time, though, things got pretty quiet around the project as other browser ...

The Codelobster free web language editor has been available for quite some time and has attracted many fans. It allows you to edit PHP, HTML, CSS and JavaScript files, and it highlights the syntax and ...

Brackets is a free open source editor, originally from Adobe, built to provide better tooling for JavaScript, HTML, and CSS, as well as related open web technologies.

Flux (£69.95) is a fairly powerful CSS / Javascript / HTML editor, with a free trial download. Once again, I've never used it -- but if you want to update your site into HTML5 goodness for the ...

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.