Tech Thursday: Mobile frameworks, emulators & simulators, HTML5 vs. HTML, CSS playground, web performance

Take a break from bad weather with late-breaking Tech Thursday links:

- The ultimate guide to mobile emulators and simulators.

- A list useful Chrome extensions for web developers.

- How to use Git to manage a web site.

- Documentation is freaking awesome, a presentation by Kyle Neath.

- Four elements of web performance: weight, time, processing and perception.

- HTML5 vs. HTML by Zeldman

- How to code a clean minimalist website layout.

- Treesaver, a JavaScript framework for creating magazine-style layouts using standards-compliant HTML and CSS

- A list of 9 mobile framework to kick start your mobile development career.

- Guide to website navigation design patterns.

- A tool for playing around with CSS in your browser.