I think the relevant portion is a non-compete with MS Office products. further info about license: http://weblogs.asp.net/fbouma/the-evil-of-the-office-ui-ribbo

I think the relevant portion is a non-compete with MS Office products. further info about license: http://weblogs.asp.net/fbouma/the-evil-of-the-office-ui-ribbon-license http://weblogs.asp.net/fbouma/the-evil-of-the-office-ui-ribb... original license and requirements (now dead): https://msdn.microsoft.com/en-us/office/aa973809.aspx https://msdn.microsoft.com/en-us/office/aa973809.aspx archive: https://web.archive.org/web/20120317065353/http://msdn.microsoft.com/en-us/office/aa973809.aspx https://web.archive.org/web/20120317065353/http://msdn.micro... apparently the non-compete is removed now: https://www.devexpress.com/Support/Center/Question/Details/Q559500 https://www.devexpress.com/Support/Center/Question/Details/Q...