text: * [https://www.rickallmendinger.net/stereonet Stereonet], a software tool for structural geology by Rick Allmendinger.
  * [http://sourceforge.net/projects/tclab/ PTCLab], the phase transformation crystallography lab
  * [http://sourceforge.net/projects/sphaerica Sphaerica], software tool for straightedge and compass construction on the sphere, including a stereographic projection display option
  * [http://estereo.reyuntec.ar/ Estereografica Web], a web application for stereographic projection in structural geology and fault kinematics by Ernesto Cristallini.