The MMFT Meander Designer is a GUI-based tool that is able to generate so-called meanders. Microfluidic devices usually consist of recurring elements that serve a specific function. Meanders, for instance, can be employed to increase the hydraulic resistance of a microfluidic channel. These resistances are useful for altering the overall behavior of a network of channels, much like resistors do in an electrical circuit. A classic application is to use meanders to modify the resistance of two adjacent channels, thereby adjusting the mixing ratio of the incoming fluids. Typically, additional objectives for meanders come into play, for example a total volume, a fixed width or height, a fixed aspect ratio, or particular inlet positions. The Meander Designer is a lightweight tool that automatically generates microfluidic channels that satisfy such specifications.

The tool is implemented in JavaScript and provides an easy-to-use interface that can be accessed online. It consists of a simple form for all input parameters, and the output is delivered as an SVG image. Moreover, the interface exposes parts of the internal algorithm ("Maximum Resistance Designer") which can (attempt to) create area-filling curves in non-meander shape and with arbitrary inlet positions.