Chiron is a very strong chess engine. You can read more about its history and development in the About page. Chiron is available for Windows and Android.
Its main features are:
playing strength of about 3240 Elo points on single core* parallel search for up to 512 threads adjustable playing strength with autolimitation of book knowledge support for UCI and Winboard2 communication protocols MultiPV and searchmoves for game analysis support for Chess960 support for Polyglot, CTG and Arena opening books support for Syzygy, Nalimov and Gaviota tablebases support for Scorpio bitbases smart detection of pawn blockages
*CCRL 40/4 list