RC Default Apps replacement?
I was thrilled to see that RC Default Apps still works in Sierra. It can, by default, open Pages 09 when you double click on a Pages doc, allowing you to have both versions of Pages on your Mac without the frustration of having to use "open with" each time you open an old version file.
http://www.rubicode.com/Software/RCDefaultApp/
This program is getting old in the tooth. Anyone know of another that works as well?