GitHub - coolastro/pyCOSMOCAL: Ned Wright Cosmology Calculator [http://www.astro.ucla.edu/~wright/CosmoCalc.html] with Graphic User Interface
![The Formula to Calculate the Red Shift-Distance Relation of Ia Supernova in Cosmology Has Essential Mistakes —The Calculation of Cosmological Red Shift Should Use the Doppler Formula Directly The Formula to Calculate the Red Shift-Distance Relation of Ia Supernova in Cosmology Has Essential Mistakes —The Calculation of Cosmological Red Shift Should Use the Doppler Formula Directly](https://www.scirp.org/html/paperimages/23272_1.jpg)
The Formula to Calculate the Red Shift-Distance Relation of Ia Supernova in Cosmology Has Essential Mistakes —The Calculation of Cosmological Red Shift Should Use the Doppler Formula Directly
GitHub - seVenVo1d/cosmic: GUI-based cosmology evolution calculator (similar to Ned Wright's cosmology calculator).
![John Wise on Twitter: "Maybe the most useful cosmology chart has been updated for Planck 2018. If you haven't seen this already, introducing the pencil and paper cosmology calculator by Sergei Pilipenko John Wise on Twitter: "Maybe the most useful cosmology chart has been updated for Planck 2018. If you haven't seen this already, introducing the pencil and paper cosmology calculator by Sergei Pilipenko](https://pbs.twimg.com/media/EwCgcU9XEAMSVat.png)