I have a web application, and I want Google to identify it as a "web application". I've had a look at Rich Snippets, but there is just an option to "software application" which refers to a desktop application and not web application. Any idea of how to achieve this?
Try schema.org metadata for WebApplication. It looks like that.
<body itemscope itemtype="http://schema.org/WebApplication"> <h1 itemprop="name">YOUR_APP_NAME</h1> <meta itemprop="about" content="short_info_about_your_app" /> <meta itemprop="browserRequirements" content="requires FileAPI support" /> ... </body>