Tokyo-based system developer Asial announced today that it has launched a component generator for mobile app developers called Onsen CSS components. It’s available in English and Japanese. While HTML5 technology lets developers create for multiple platforms, it remains difficult to develop the kind of user experience found in native apps. To address this problem, their solution lets you to generate user interface components and download them for free. So you don’t need to develop a user interface from scratch when you develop a HTML5 app. The component generator has more than 20 design framework patterns, and you can choose your prefered color scheme for the interface, with an the inspection function that lets you inspect HTML and CSS code. You can migrate the interface to your app under development by simply copying the generated codes. Asial is perhaps best known for having created the mobile development environment Monaca, which won the second place in pitch competition at Global Brain’s showcase event last year.