Content Management Hosted/API Tools

API CMS (i.e., Content Delivery CMS) Tools:

Contentful [$]
Cosmic JS [free to $]
prismic.io [free to $]
elemeno [free to $]

Hosted CMS Tools:

Cushy CMS [free to $]
LightCMS [$]
Page Lime [$]
Surreal CMS [$]

Static CMS Tools: