Vertical End Portals by TheRandomLabs
Vertical End portals!
Vertical Slabs by Steelfeathers
Slabs, but vertical.
Vertical Slabs & Horizontal Stairs by _gjkf_
Adds vertical slabs and horizontal stairs to vanilla Minecrqft
Vertical Slabs Mod
This Mod adds vertical slabs!
Vertical spawn control by Foghrye4
Vertical spawn control for Cubic Chunks
Vertically Stacked Dimensions by CD4017BE
Effectively increases the Build height by stacking dimensions above each other with transition portals in between.
VeryLegacyZoomer by Tapio
A very legacy zoomer.
VerySimpleDim
A small mod that provides a safe resource world with portal