Squisher is a plugin for Grasshopper3D that expose three components to allow using the Squish command to flatten double curved surfaces and meshes. It is a wrapper of the Squisher Class from RhinoCommon.
Install the plugin as usual (copy the the .gha to your GH Libraries folder).
The three components are available under: Tranform>Squisher
Squisher is developed by Ayoub Lharchi at the Center for IT and Architecture.