For now this is consider to be a prototype but I hope to finish it and release it as a proper standalone application. The code is quite messy (especially the frontend part) and it doesn't even have any unit tests :). But it already works and can be used for quick responsive and cross-browser layout testing.

• Java 1.8
• Firefox browser

So as Galen Framework the Galen IDE is licensed under Apache License, Version 2.0