Top 10 Programming Languages to Choose From in 2021

The variety of programming languages on the market today can turn your head. According to analysts, there are currently 256. However, despite such a large number, there are only 10-15 popular languages. Every year the list of languages changes, and this year we decided to create our top 10 major programming languages in 2021.

Well-Known Programming Language Rankings

To begin with, it is worth telling that there are two most famous ratings of programming languages: TIOBE and PYPL. TIOBE measures the frequency of requests for a particular programming language, while PYPL measures the frequency of requests for textbooks on programming languages. As a result, the results of these ratings differ slightly. Let’s take a look at the TIOBE results.

And here are the results of the PYPL rating.

As you can see, the situation is different. However, we decided to compile our own top of popular programming languages. Let’s start our countdown.

10 Best Programming Languages in 2021

#10. Kotlin

We begin our list with a popular programming language for Android, and this is no accident. The popularity of this language is growing every year along with the growth of the audience of users of Android devices. For example, in 2020, more than 124 million users of Android devices were registered in the United States alone, and this is far from the limit.

Why it’s popular?

  • This language is fully compatible with Java.
  • It is well suited for back-end development.
  • It has an excellent incremental compilation.

#9. Swift

In ninth place, we put the most popular development language for iOS devices. When you hire iOS developers to develop an app, you can be sure they will know Swift. Among the many pluses, the open-source code and unrivaled speed are noted. In addition, this language has replaced Objective-C and is actively supported by Apple.

Why it’s popular?

  • This language is open source.
  • Stable ABI regardless of the iOS device.
  • Swift is fully Objective-C compatible.

#8. Objective-C

Despite the fact that this language was the first on the IOS platform and its support has already ceased, it still remains one of the most popular when it comes to developing an IOS application. All thanks to the huge number of applications created in this language and which require support.

Why it’s popular?


  • Objective-C is based on the well-known C programming language.
  • This language uses static libraries.
  • Runtime code compilation.

#7. R Language

In seventh place, we decided to put a rather narrowly focused language. However, this does not make it less popular. Mostly R language is used by various analysts and data scientists because this language does an excellent job of processing statistics. Also, this language supports the work of all well-known Wikipedia.

Why it’s popular?


  • This language is great for data analysis.
  • R Language fully supports Windows, Mac OS X and Linux.
  • Thanks to it, industries such as banking, healthcare, consulting and others can quickly process huge amounts of data.

#6. C/C++

According to other ratings, these languages are often in one place and we decided to unite them in our rating. After all, these languages are one of the oldest and at the same time popular to this day. In addition, C ++ is quite similar to C, because it is a modified version of it that supports object-oriented programming.

Besides that, these languages are similar in:

  • Memory model
  • Interface export mechanism
  • Basic syntax

#5. PHP

It would be foolish to deny that PHP is one of the most popular web development languages. Its power lies in its limitless server-side scripting capabilities. This feature helps to create websites and web applications of any complexity.

Why it’s popular?

  • This language is open source which makes it highly modifiable.
  • PHP is very easy to learn, and you will find hundreds of tutorials on this programming language.
  • PHP can be used to create cross-platform applications.

#4. C#

In fourth place, we put one of the most versatile variations of the C language – C #. This is due to the fact that it is a fairly familiar C language that has been modified with various useful features borrowed from Java. This set allows you to create anything from complex server applications to full-fledged mobile games.

Why it’s popular?

  • This language has deep integration with Windows OS.
  • C # uses dynamic libraries.
  • This programming language has enumeration support.

#3. JavaScript

We decided to open the top three with Javascript. Today it is difficult to imagine web development without this programming language. With Javascript’s help, we create beautiful animations on sites, transitions between elements, effects, and other visual elements. Without it, all sites would look the same and dull.

Why it’s popular?

  • Using Javascript, you will be surprised at the sheer number of different libraries.
  • During development, a useful feature called data validation will come in handy.
  • Javascript has better compatibility with other programming languages.

#2. Java

The silver medalist of our top is the Java programming language. This language has been at the top of popularity for many years, and many giants of various industries use it for their business purposes. For example, Twitter, LinkedIn, Amazon, eBay, and many others are developing rich web applications and back-ends with Java. In addition, this language is the official programming language for Android and has tremendous support from Google.

Why it’s popular?

  • Java has high stability and performance.
  • When working with Java, the first thing that you will come across is the high quality of the code compilation.
  • Java has cross-operating systems portability.

#1. Python

The winner of our top and most popular programming language in 2021 is Python. Over its long history, this language began as a highly focused and simple automation language and has evolved into the most popular and powerful language for creating mobile applications and websites.

Why it’s popular?

  • Starting to work with the Python programming language, you will come across the most understandable and detailed documentation for use.
  • This language has a single standard library.
  • You will have many different frameworks in your arsenal for all occasions.

Wrapping Up

Let’s be honest with all this variety of languages, it is easy to get lost in this diversity. Every year, more languages appear designed to make life easier for developers and bring new technologies into the established processes of creating software. That is why it is extremely important to always keep your finger on the pulse of innovation and keep abreast of technological trends. And the top of popular languages is one of the types of information that will help you keep abreast of the situation and help you make the right choice.

Guest article written by: Kate Orekhova is a tech writer at Cleveroad. A writer by day and a reader at night, she’s keen on technology and innovations. Her passion is to tell people about the latest tech trends in the world of IT.

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