Carrd is an impressive addition to this list. It allows you to build simple one-page sites that can be used as a landing page, an online profile page, a form that collects emails or more.
It has a smooth learning page and very affordable pricing, with up to 3 sites on the forever free plan. $19 / year will get you 10 websites and lots of goodies like domain mapping, script embeds and unlimited page elements.
That said, Carrd is not a full fledged marketing solution, it's main use is to ship a simple one-page website right now for cheap. If you need a full marketing funnel solution, check out ClickFunnels or LeadPages.