WebMatrix is a free, lightweight, cloud-connected web development toolCreate, publish, and maintain your website with ease
WebMatrix has grown into a powerhouse for web developers on Windows looking for a tool that has it all in one. I personally use this as my main coding application on Windows along with MySQL Workbench, since I code my websites in PHP.
WebMatrix 3 brings a lot of new features and improvements to the table. Along with the cool new features is Source Control with Git/TFS and remote site editing. It's also cool to see thumbnails of your projects instead of reading through titles.
One of my favorite extenstions along with ImageViewer!
Any experienced or seasoned developer would be happy with WebMatrix 3.