Quick Base will be ending support for browsers Microsoft Internet Explorer 9 and 10 on March 31st, 2018. As these browser versions are not supported by Microsoft, they pose increasing security risks to their users and organizations. For more information, check out their blog.
I work at a small environmental non-profit that uses Quick Base for almost all of our administrative work and list management. This is my 4th year hiring the Data Collaborative to set up custom add ons for our Quick Base applications. The quality of work has been excellent.