Minkowski - Spherical - ⊚ - {t,r,θ,φ}      
  Minkowski - Cartesian - ⊞ - {t,x,y,z}      
  Minkowski - Cylindrical - ▭ - {t,r,θ,z}      
  Born - Cylindrical - ▭ - {t,r,θ,z}      
  Rindler - Original - ⊞ - {t,x,y,z}      
  Rindler - Radar - ⊞ - {t,x,y,z}      
  Rindler - Kottler-Møller - ⊞ - {t,x,y,z}      
  Static Weak Field - Spherical - ⊚ - {t,r,θ,φ}      
  Rotating Charged Weak Field - Spherical - ⊚ - {t,r,θ,φ}      
  Inner Schwarzschild - Droste - ⊚ - {t,r,θ,φ}      
  Inner Schwarzschild - Droste - ⊞ - {t,x,y,z}      
  Schwarzschild - Droste - ⊚ - {t,r,θ,φ}      
  Schwarzschild - Droste - ⊞ - {t,x,y,z}      
  Schwarzschild - Raindrop - ⊚ - {t,r,θ,φ}      
  Schwarzschild - Raindrop - ⊞ - {t,x,y,z}      
  Schwarzschild - Finkelstein - ⊚ - {t,r,θ,φ}      
  Schwarzschild - Finkelstein - ⊞ - {t,x,y,z}      
  Schwarzschild - Null - ⊚ - {u,r,θ,φ}      
  Schwarzschild - Isotrop - ⊚ - {t,ř,θ,φ}      
  Schwarzschild - Kruskal Szekeres - ◪ - {u,w}      
  Reissner Nordström - Droste - ⊚ - {t,r,θ,φ}      
  Reissner Nordström - Raindrop - ⊚ - {t,r,θ,φ}      
  Reissner Nordström - Finkelstein - ⊚ - {t,r,θ,φ}      
  Reissner Nordström - Null - ⊚ - {u,r,θ,φ}      
  Kerr - Boyer Lindquist - ⊚ - {t,r,θ,φ}      
  Kerr - Doran Raindrop - ⊚ - {t,r,θ,φ}      
  Kerr - Kerr Schild - ⊚ - {t,r,θ,φ}      
  Kerr - Null - ⊚ - {u,r,θ,φ}      
  Kerr Newman - Boyer Lindquist - ⊚ - {t,r,θ,φ}  
  Kerr Newman - Doran Raindrop - ⊚ - {t,r,θ,φ}  
  Kerr Newman - Kerr Schild - ⊚ - {t,r,θ,φ}  
  Kerr Newman - Null - ⊚ - {u,r,θ,φ}  
  Flat FLRW - Proper - ⊚ - {t,r,θ,φ}  
  Flat FLRW - Proper - ⊞ - {t,x,y,z}  
  Flat FLRW - Comoving - ⊚ - {t,r,θ,φ}  
  Flat FLRW - Comoving - ⊞ - {t,x,y,z}  
  Flat FLRW - Single Component - ⊞ - {t,x,y,z}  
  Curved FLRW - Hyperspherical - ⊚ - {t,r,θ,φ}  
  Curved FLRW - Circumferencial - ⊚ - {t,r,θ,φ}  
  Vacuum De Sitter - Comoving - ⊚ - {t,r,θ,φ}  
  Vacuum De Sitter - Comoving - ⊞ - {t,x,y,z}  
  Vacuum De Sitter - Droste - ⊚ - {t,r,θ,φ}  
  Schwarzschild De Sitter - Droste - ⊚ - {t,r,θ,φ}  
  Schwarzschild De Sitter - Raindrop - ⊚ - {t,r,θ,φ}  
  Schwarzschild De Sitter - Null - ⊚ - {u,r,θ,φ}  
  Reissner Nordström De Sitter - Droste - ⊚ - {t,r,θ,φ}  
  Reissner Nordström De Sitter - Raindrop - ⊚ - {t,r,θ,φ}  
  Reissner Nordström De Sitter - Null - ⊚ - {u,r,θ,φ}  
  Kerr Newman De Sitter - Boyer Lindquist - ⊚ - {t,r,θ,φ}  
  Kerr Newman De Sitter - Kerr Schild - ⊚ - {t,r,θ,φ}  
  Kerr Newman De Sitter - Null - ⊚ - {u,r,θ,φ}  
  Vaidya - Null - ⊚ - {u,r,θ,φ}  
  Kastor Traschen - Comoving - ⊞ - {t,x,y,z}  
  Gravitational Wave - Cartesian - ⊞ - {t,x,y,z}  
  Gödel - Cylindrical - ▭ - {t,r,θ,z}  
  General Metric - Coordinate Independent