The thing I like(d) about Creative Clans Embed Script is that it doesn't require you to build a library of snippets in advance. You simply paste whatever code you want to append/prepend to a page into a dedicated field on the Edit Page ... page. Another advantage to this is that it completely isolates the snippet from the page content; you don't even have to reference a shortcode.
Is there an alternative that's equally simple and flexible?
* The WordPress page editor auto-saves a draft every few minutes, right? When this happens, Creative Clans Embed Script loses any snippets for that page. I've replicated the behavior in different browsers, on different computers, and on different websites. The plug-in hasn't been updated in two years.