Stockfish 10 with Polyglot book
I liked to have Stockfish 10 without changes to the Stockfish code but with the option to use a Polyglot book (.bin) - so I can play against SF in a certain opening line for example.
So I merged some code of BrainFish with Stockfish so SF can use Polyglot opening books.
Of course many Chess GUI's has an opening book option - but some don't and there are some use cases for an engine with an internal opening book
Here is the source code on Github and binaries for the Mac published under GPL v3 license like the original projects .
Hope you find it useful.
Credits:
Massimiliano Goi also did this on his own
https://chess.massimilianogoi.com/download/stockfish/
Check him out, too!