Top 10 iOS Libraries That Will Be Mainstream in 2021

The debate between iOS vs Android will keep sprouting until doomsday, however, the owners who are convinced of their business operations and the objective it tends to attain in the future, take the responsibility of concluding decisions as a no-sweat job. 

The mobile app development ecosystem has witnessed disruptive and fascinating changes over the years and no one can deny the fact that companies have been inquisitive about knowing the fundamentals of mobile app development ever since they have come to know about the necessity of having a mobile app for the enterprise. 


While brands always have an option to choose any one between Android and iOS, the latter seems to be widely known for the brilliant execution and most practical features. 

However, in this modern world of thriving technology, the more you employ, the less it is going to be and in order to eradicate the void of something-is-missing in the development process, the iOS libraries come into play.

But what iOS libraries are? Why are they used in iOS app development? What are some popular iOS libraries? There might be many questions like this popping up in your mind, rest assured every query will be probed and answered. Stay tuned to this article.

What Are iOS Libraries?

An iOS library, also known as a framework, consists of a set of instructions and compiles iOS code archives that can be put to use while developing another similar or distinctive app. While some libraries extend to networking, some provide easy-to-use HUD. However, the primary objective of each library narrows down to proliferate the app development process. An experienced and leading mobile app development company keeps the list of all the important iOS library frameworks that they can deploy while building a state-of-the-art app for their client.

List of iOS Libraries Being Widely Used By Developers

  1. Alamofire: It is an HTTP networking library built from the ground up using Swift language. Alamofire provides a decent and composable way to interface chainable request and response methods by wrapping several APIs and simplifying common networking tasks.
  2. Lottie: Developed by online marketplace giant Airbnb, Lottie exposes itself as an incredibly important iOS framework that highly contributes to the open-source community. Lottie library is mainly built to serve the purpose of providing astounding animations to iOS developers. This framework allows programmers to export animations from Adobe After Effects.
  3. SDWebImage: It is one of those iOS libraries which developers rely supremely on when it comes to working towards an issue of image downloader with cache support during app development. SDWebImage features categories for UIImageView, UIButton, MKAnnotationView, etc., and comes with customizable memory and disk cache attributes.
  4. SnapKit: It is a well-accepted framework that allows iOS developers to manage and fix the issues related to auto-layout in the development process. With the help of SnapKit, the coders can easily create, remove and update layout constraints of the UI views. Moreover, SnapKit provides a simple syntax that can be tailored easily.
  5. VComponents: The major objective of this framework is to minimize the use of view modifiers and states by leveraging the SwiftUI library. VComponents, being ahead of many other frameworks, brings the advanced syntax of SwiftUI into being that eventually makes the views more flexible and reusable for developers.
  6. RxSwift: An advanced Swift version of RX, RxSwift ports as many concepts from the original version as possible in order to enable easy composition of asynchronous operations and event/data streams. The reason why RxSwift seems to be elegant and simple to use for developers is that the async operations and streams can easily be integrated under the abstraction of sequence.
  7. Hero: Trust me, this library is as unique and impressive as its name. Hero framework is majorly used by iOS developers for building iOS view controller transitions. It provides a semantic layer on top of the UIKit's cumbersome transition APIs. By providing a declarative layer on UIKit's cumbersome transition APIs, Hero makes the transition job as easy as pie for developers.
  8. AboutKit: As the name itself suggests, this is an SDK that helps developers discover the essential components of the app. AboutKit enables users to get a comprehensive onboarding library guide. Hence, the programmers, before getting into setting everything on their own, can have a look at the app's flow and utilize the functionalities accordingly.
  9. Realm: It is one of the frameworks, developers find easy to employ in the app infrastructure. Realm solves existing performance and maintenance issues in an app by exposing data directly as objects and contestable by code. Realm is way faster than raw SQLite and supports modern vectorization and Swift.
  10. Kingfisher: It is touted as the most preferred iOS library for downloading and caching images from the web. The basic process it follows is it downloads the image from a given URL, sends it to both memory cache and disk cache, and ultimately displays the image in an UIImageView, NSImageView, and NSButton.


Now you are familiar with the names of iOS libraries that will garner traction in 2021 and beyond, it would be great if you can put your take on the given list (you can share the same in the comment section).

Since the libraries are something that keeps on getting discovered every then and now, these were my mentions of some widely popular frameworks iOS developers put into use more often. I have compiled this list after understanding the iOS app infrastructure being followed by Swift and other prominent iOS app developers.

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