As posted previously, there are some truly great add-ins for the VBE (VBA Editor), one of which is the Smart Indenter.  That said, with the various changes in OS and MS Office products there have been a few bumps in the road trying to get it to install properly with the latest and greatest versions.  In a recent thread on UtterAccess, one member reported that they managed to get it properly installed and the solution was to actually install the IndenterVB6.exe rather than IndenterVBA.exe.  Seems counter intuitive, but definitely worth trying out so you can continue to use this small, but powerful tool!

Update 2020-04-03 2016-02-25

Also, I was informed by fellow MVP Jack Stockton, that Smart Indenter will work with the MSI installer, but not with the Click-to-Install/Click-to-Run edition of MS Office.  So if you buy the standalone MS Office then you should be able to install Smart Indenter, but if you are using MS Office through an Office365 account, then sadly you won’t be able to.  This is yet one more issue with the Click-to-Install/Click-to-Run editions.
Fellow MVP Tom van Stiphout has now confirmed that the above is no longer true and that Smart Indenter is now compatible with all versions.