Glowe - Widget Development
Glowe is an XML file format based on industry best practices in widget development. Glowe is continuously adapted to evolutions in the widget space. Glowe is open-source, so anyone and everyone can use the specification for free.
About the logo: The 'O' comes from Open widget environment. The circles are the users working on the open-source projects, creating the 'glowe'.
Your can visit their website on www.glowe.org