Embedly - Embedly helps publishers and consumers manage embed codes from websites and APIs.
Screenshot Machine - Screenshot machine is an online website capturing service. Creates a screenshot or thumbnail of any online web page in couple of seconds for free.
Microlink - Extract structured data from any website
URL2PNG - Screenshots as a Service. Capture snapshots of any website, right in your app, quickly and reliably.
Iframely - oEmbed proxy. Supports over 1800 domains via custom parsers, oEmbed, Twitter Cards and Open Graph
ApiFlash - ApiFlash is a powerful serverless screenshot API built with Chromium and AWS Lambda. It can easily scale to millions of screenshots per day and has an ever growing number of satisfied big clients.