Application programming interface
software interface between computers and/or programs
Carbon
C dynamic memory allocation
Cocoa
Postman
io_uring
Asynchronous Server Gateway Interface
Jakarta XML Web Services
Microsoft Windows Internet
Core Audio
DOS Protected Mode Interface
Jet Data Access Objects
Database abstraction layer
database interface
OLE DB
Direct Rendering Manager
TWAIN
Message Passing Interface
Google Hangouts
Glide
Berkeley sockets
Direct2D
Internet Server Application Programming Interface
Generic Security Services Application Program Interface
Mantle
Jakarta Transactions
Java Native Interface
Jakarta Annotations
Jakarta Web Services Metadata
JavaScript Gateway Interface
Google Cloud's operations suite
Remote Function Call
Google Cardboard
Global Address Space Programming Interface
Metal
Stage3D
Open Web Interface for .NET
Network Driver Interface Specification
Messaging Application Programming Interface
Windows Image Acquisition
Oracle Call Interface
Open Database Connectivity
Universal Windows Platform
Google Calendar
International Image Interoperability Framework
Google Daydream
Core Audio
Close to Metal
service provider interface
Media Control Interface
Jakarta SOAP with Attachments