I explored it but haven't used it in a real project, it has the following features
1. Browser Based Process Designer
2. They are meant to process most of the data at client side and only call server when necessary
3. Collabaration is not supported
4. Limited Support for dojo-based non -responsive coaches
5. Full support for Angular based responsive coaches
6. Custom themes can be created with the theme editor
7. Client side standard javascript scripts are used
8. you can nest multiple Client side Human Human services