Twilio - Brings voice and messaging to your web and mobile applications.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Linker - Cloud based bookmark manager
Plivo - Plivo simplifies your customer engagement.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.