Is there like a launcher for Quest engine games?

I think Quest.exe is the only way to run the game.
If someone were to download the Quest engine, (Quest.exe) then that program can run on any windows based PC.
Website not required.
But why??? We may want to see what you created as well!!!

KV tried to work on completing the QuestKit (converting quest to using JS entirely, which would allow anyone to be able to run the quest games via through/using web browsers), but even KV gave up on it (he made some progress, but not enough)...

Alex (creator of quest) moved on with life (as he's been developing quest for like 10+ years), before he had completed QuestKit, unfortunately... and quest is a myriad of different programming languages and software all working together, so it's very hard for others to get a handle on quest to improve upon it...

as Dark Lizard said:

easiest is to just tell/have people download the 'quest.exe' software, as it is the quest engine, allowing people to play their games offline

Quest is opensource so you can install the included questplayer on your own server