Astroid Framework is built with simplicity and ease use of mind. Astroid lets you manage every aspect of your Joomla website without writing a single line of code which helps you build Joomla templates easily. Also available in multiple languages (know more here).
Its a powerful framework for designers & developers to create responsive, fast & robust Joomla based websites and templates.
To know more about what all Astroid has to offer read the documentation.. Astroid Documentation