alt Hacker NewsI've got the Android app and love it, as well as Knots 3D.
Most knot enthusiasts will already know about it, but in the analog world The Ashley Book of Knots is fantastic. Beautifully illustrated; the author, Clifford Ashley, was a marine painter and spent decades documenting almost 4,000 knots.
> The Ashley Book of Knots is fantastic.
Yup. Referring to knots by their ABoK numbers is also more practical than by their wildly varying names.