concrete5 5.7 Demo Site
concrete5 5.7 is a major change from the previous releases. We have installed a demo you can use to experience the new user interface.
Our demo site can be accessed at http://c5sandbox.exchangecore.com/. You can login (link is in the site's footer) and use the editing interface using the username demo and the password demouser.
The demo resets every three hours. If someone broke the site just give it a few hours and try again.
Please remember that concrete5 5.7 is still a beta product. You may find bugs (they can be reported on GitHub) and some features may change before the final release.