Another useful multi-purpose tool I should have mentioned is Stanislav Okhvat's Transtools ==>>
Translator Tools – Productivity tools for editing and translation.
It overlaps a bit with Toxaris' addon for Word, but like Tox's add-in it has some unique features, its Unbreaker feature and Symbol tray tool alone might be worth its cost to some.
It's actively maintained and Stanislav's responses to issues and suggestions are prompt and professional.
I think Kim put me onto it.
PS: Sigil's PageView program, useful for Copy Editing/Proofreading.
BR