DevBoi is a Firefox add-on that adds a sidebar with web-development references and documentations for HTML, JavaScript, CSS, PHP, Ruby on Rails & Prototype.

The sidebar is very handy for any developer as you can reach it with a simple “CTRL+F9″, find any function or property, see the browsers it supports & more.

Standard installation supports:

• HTML 4.01/XHTML 1.0,
• CSS 2.1,
• DOM 2,
• JavaScript 1.3

Download Language Support from here

Download Firefox Add-on

Visit Original site here

HTML-Ipsum is a website presenting “Lorem Ipsum” text in HTML format.

It can also provide Mac-friendly outputs with:

• Coda clips
• Textmate bundles
• Menu bar app.

Several types of content is provided like:

• Long-medium paragraph, one sentence
• Unordered list – short/long items
• Ordered list – short/long items
• And a combination (with extras).

One feature that would be great is the possibility to switching to the “design-view” (although presenting the HTML is the main aim).