IsoplotR: For doing geochronology
GeoRem: For finding geological standards
MacroStrat: Geological map aggregator
MAGEMin: A useful tool for thermodynamic modelling
Perple_X: Another useful tool for thermodynamic modelling
Franklin.jl: Julia based website builder
JuliaLang: Home of the Julia programming language
JuliaEarth: Geospatial data science with julia online textbook
OpenFlexure: Open source 3D-printed microscope