This extension currently supports D&D 3.5E, Pathfinder 1e, Starfinder, and D&D 5E.
Forge Link
As of v3.0 the name of this extension got changed to Spell Action Info. You need to manually delete older versions called Spell Casting Time Labels.
Here is an overview:
https://i.imgur.com/Zix488B.jpg
The casting time doesn't get shown in the mini_charsheet (no space and I don't know anyone using this). Furthermore, the displaymode "Summary" hides the casting time labels, again space, and it looks better this way in my opinion.
https://i.imgur.com/uyTlaYR.jpg