zoid VS postmate

See also: https://github.com/krakenjs/zoid which allows you to present a simple interface to sites that want to embed your application and send parameters/register callbacks. All the caveats of frames still apply, of course, and scrolling glitchiness alone is a reason to avoid frames altogether... but if you absolutely need to present your application as a frame, it's a developer-friendly way to do so.

Pdom seems to be a way to do that to yourself, if you can't trust that your content won't cause performance degradations and you absolutely want the context outside that content to stay responsive. I'd only use it, and really any frame, for components where the size is known ahead of time, though; asking a frame to resize itself to fit its contents, when its contents may themselves be resizing to the size of the frame, is a recipe for disaster. Which brings me around to why I try to avoid frames for anything user-facing when at all possible.

IFrames are both terrible and awesome. I built and maintain zoid, which turns iframes into full-fledged components; it's been an adventure: https://github.com/krakenjs/zoid

A few months ago I was using the postmate library at work, to expose methods from my application (which was inside an iframe) to its parent app.