I was stunned to see that the free Acrobat Reader has a tabbed interface and to hear that the subscription version of Acrobat DC Pro does too. But if Adobe has any sense of decency you will quickly give us owners of a licensed Acrobat Pro DC the tabb

I have discovered a way around this greedy policy of Adobe's try to to force users into the much more expensive subscription. There's a very low-cost program called TidyTabs Pro that easily enables you to make Acrobat Pro DC (licensed version) or just about any application that opens files in separate instances of the program, into a program with just a single window and tabs across the top for each file that is open in that program (TidyTabs doesn't seem to want to work with Office 365 programs, but you can get Office Tabs from extendoffice.com for that).

In TidyTabs Pro, you simply open the settings and go to "grouping." Work your way to acrobat.exe  and click on the + button and then "apply." From now on you'll have the tabbed feature without having to switch to Acrobat Pro's subscription model. (The free version does not let you set up groups.) TidyTabs comes with a free trial, but it runs for just an hour at a time. The program is dirt cheap - $9 for one permanent license, $6 per license for 2-4 licenses, $5.75 for 5-9 licenses (they really enforce the 1 computer per license rule, but at these prices that's only fair). It's available at nurgo-software.com/products/tidytabs.