Google Scripts has a way to be embedded into a Google Site, but I'm wondering if I could use a Google Script with a website that's not hosted by Google. The purpose of this google script is as a simple alternative to Javascript for the simple functionality of accessing a Google Spreadsheet.
It's currently not possible to embed an Apps Script interface in a non-google web site. You can publish a script as a web app and it will have it's own URL, but you can't embed it in an iframe.