what do you use to build webapps

Hey...

I posted a question a few mins ago for a php/laravel tutor...

Got me thinking, perhaps laravel isn't needed, so I should back up a sec.

So, when you're building webapps, what do you use? and why if you don't mind?

thanks!

ps.
This may all come down to me finding a resource to simply build what I
need, with whatever is used that would let someone else mod it in a
few mths/years!

thanks again