Valkyrien Warfare
Valkyrien Warfare was the original name of Valkyrien Skies.
The CurseForge page for example used it. The page has since been renamed to valkyrien-skies.
Valkyrien Warfare Revamped
Valkyrien Warfare Revamped was the second name change for Valkyrien Skies.
The GitHub repository used this name.
It succeeded Valkyrien Warfare and was later succeeded by the name Valkyrien Skies.
Valkyrien Skies 1
Valkyrien Skies is the current name of the mod. Valkyrien Skies 1 refers to the version released for 1.12 and currently is not receiving any official support [https://github.com/ValkyrienSkies/Valkyrien-Skies].
Valkyrien Skies 2
Valkyrien Skies 2 is the version currently in active development. It features a purpose-built physics engine, Krunch.
It exists versions for 1.16, 1.18, and 1.20, and community members also have plans to backport it to 1.12.
This wiki, the website, the GitHub repository, the CurseForge page and the Discord server currently all use this name.