3DμF is an interactive tool for designing continuous flow microfluidic devices. It is the first completely open source interactive microfluidic system designer that readily supports state of the art design automation algorithms. It can be used to reproduce designs from literature, provide metrics for evaluating microfluidic design complexity and showcase how 3DμF is a platform for integrating a wide assortment of engineering techniques used in the design of microfluidic devices as a part of the standard design workflow. Read more about 3DuF on https://3duf.org/ and https://www.nature.com/articles/s41598-019-45623-z