Salesforce API and Use

API	What can you use it for
REST API	Access the different objects in your org using standard REST protocols
SOAP API	Integrate your org’s data with other applications
Bulk API	Insert, delete and perform Async queries against large data sets
Metadata API	Build tools that manage your metadata model and make customizations in your org
Streaming API	Send/Receive secure notifications. These notifications can reflect data changes in your org or even custom events
Tooling API	Build custom development tools for different Salesforce Platform applications
Chatter REST API	Build a UI for Chatter, Files, Topics, Communities and more
Marketing Cloud API	Get comprehensive access to most email functionality with the SOAP API.
Mobile SDK	Integrate native or hybrid mobile apps directly with Salesforce