10 Popular Backend APIs

Most application users are familiar with the Front-end, or client-side, of an application, because that is the portion of the application users can see. But there is more than meets the eye for web and mobile applications. For most applications, all kinds of activities, including most user interactions, take place behind the scenes, in the Back-end ("backend"), or server-side, of an application.

The backend of an application is the area where configuration of server, databases, interfaces and operating system occurs in order to power an application's front-end. Many times, backend services are bundled together in a Backend-as-a-Service, or BaaS Platform, but not always.

An applications' backend operations may include user login, ordering and paying for items, messaging, search, location services, and any other Function in which data may need to be sent, manipulated, or retrieved from a database.

Developers wishing to create applications with server-side interactions would likely need suitable Backend APIs.

What is a Backend API?

A Backend API is an Application Programming Interface that developers can use to integrate with backend services.

A great place to find these APIs is in the Backend or Backend as a Service categories in the ProgrammableWeb API directory. In this article, we give details to the ten most popular Backend APIs on ProgrammableWeb, based on website traffic.

1. Firebase

Developers can use the Firebase service to build their apps without having to manage servers or write server-side code. Firebase APITrack this API enables developers to access the functionality of Firebase programmatically and easily sync and store data in realtime. The API supports standard CRUD operations on the data within the databases as well as querying of the data. There are clients for Android, iOS and JavaScript (including bindings for Ember, React, Angular and Backbone).

2. Backendless API

Backendless is a cloud backend platform that enables developers to create apps without server coding. functions and services are available through the Backendless APITrack this API include user management, relational data, push notifications, publish/subscribe messaging, geolocation, video/audio recording and live streaming on the server.

Backendless API

Screenshot: Backendless

3. Wix API

Wix is a web development platform for users to create websites and mobile applications. It is cloud-based and utilizes drag and drop tools. The Wix APITrack this API gives third party developers enhanced functionality when interacting with the Wix ecosystem. Methods include retrieving and managing contacts, Wix Stores, Wix Events, marketing, coupons, Wix Payments, chat, bookings, and more.

4. Elebase API

Elebase is a back-end service and API-first data management platform with geospatial capabilities that make it easier to create dynamic web and mobile applications that engage communities and incorporate places. The Elebase APITrack this API offers methods to manage contacts, countries, files, groups, locales, messages, projects, timezones, users and much more.

5. Google Compute Engine API

Google Compute Engine enables users to launch virtual machines that run on Google infrastructure. The Google Compute Engine APITrack this API provides users with an interface for interacting with their resources. These resources include projects, instances, networks, firewalls and disks. The API uses RESTful calls and responses are formatted in JSON.

6. Parse API

Parse offers developers an open source backend-as-a-service platform for their mobile applications. The Parse APITrack this API lets developers interact with Parse from computers that aren't mobile devices. With the APIs developers can have their webserver show data from Parse on a website, upload large amounts of data that will later be consumed in a mobile app, download recent data to run their own custom analytics and more.


StackAPI is an online NoSQL database backend for web and serverless applications. The StackAPITrack this API enables API hosting for your projects. StackAPI can be used to read, push, modify, and remove data from StackAPI databases. StackAPI db have a unique URL as a REST Endpoint with client applications that communicate via URL and JSON objects.

8. Corona API

Corona is a backend-as-a-service (BAAS) provider for games and applications. With this service developers can create, build, and manage games and applications. The Corona Cloud APITrack this API allows developers to access and integrate the functionality of Corona Cloud with other applications with methods that include user Authentication, retrieving user information, managing account information, and managing push notifications.

9. Vuforia Web Services API

Vuforia offers enterprise AR software and a service for creating augmented reality applications that include 3D graphics, touch, video, and audio features. Vuforia includes a cloud-based recognition system designed to identify objects stored in the user's cloud database. Developers can add and manage targets in their cloud database using the Vuforia Web Services API (VWS API)Track this API.

10. Tradematic Cloud API

Tradematic provides automated trading and asset management software for stocks, futures, foreign exchange, and cryptocurrency. The Tradematic Cloud APITrack this API enables programmatic access to a back-end infrastructure for building investment and trading apps. Tradematic Cloud provides an algorithmic trading engine + API + ready-made adapters to stock and forex brokers, crypto exchanges, and market data providers.

Be sure to check out the Backend and Backend as a Service categories for more APIs, plus SDKs, and Source Code Samples.

Be sure to read the next Top APIs article: 10 Top Environment APIs