Tumult Whisk is a lightweight HTML and PHP editor with a live preview that updates as you type. Whisk is an essential app in your toolkit for HTML, PHP, CSS, and javascript programming. It is great for learning web development, testing snippets of code, or building entire web pages.

Whisk's integrated preview pane displays the web page live as you type. Whisk breaks the tedious cycle of writing HTML, saving the file, then reloading and viewing the page in the browser. Combining the writing phase with the viewing phase clarifies the effects of your changes and speeds up the overall process of making a web page. W3C-based validation will red-underline any mistakes. It uses the same rendering engine found in Safari, so it is not only standards compliant, but also very fast.
Use Whisk For:
Crafting HTML to make sure it looks exactly as you want it
Testing and executing PHP code
Writing blog posts, forum entries, or rich emails
Interactively trying out CSS
Running and debugging javascript
And creating whole websites

Compatibility: OS X 10.11 or later 64-bit
Homepage: https://tumult.com/whisk/