- https://mathweb.ucsd.edu/~justin/Papers/knotes.pdf
- https://fi-le.net/knottingham/ (https://github.com/file-acomplaint/knottingham) : https://arxiv.org/abs/2309.00445
- https://joshuahhh.com/projects/kit/
- https://knotfol.io/ (https://github.com/kmill/knotfolio/tree/master)
- https://loopspace.mathforge.org/HowDidIDoThat/TeX/Knots/
- https://github.com/cseed/knotkit