dlvr.it supports the major, modern browsers. We recommend the following:
Chrome
https://www.google.com/chrome/browser/desktop/index.html
Firefox
https://www.mozilla.org/en-US/firefox/new/
Safari
https://support.apple.com/downloads/safari
Opera
http://www.opera.com/computer
Internet Explorer 11
http://windows.microsoft.com/en-us/internet-explorer/download-ie