5 Programming Languages to Solidify Your Skills in 2021

5 Programming Languages to Solidify Your Skills in 2021

A new year means a fresh start and a new collection of programming languages to watch out for in 2021. While this list includes languages created over the span of decades, their importance in the programming and development landscapes continues to grow. As old languages die or fall out of favour, others rise to take their place. 2021 is no different in this aspect.

While no one knows for sure which programming languages will dominate the new year, below are a list of the top 5 languages to look out for to advance your professional knowledge and keep you at the top of your field.


Python has been around since the early 1990s and has since become a vital, widely-used programming language for all kinds of developers. It has many strengths, including ease of learning, code execution speed, and multiplatform implementation that works on Windows, Mac, Linux, and beyond. Python also has an attractive simplicity and readability, as it’s been designed with similarities to the English language. It also integrates easily with other programming languages and allows developers to write programs with fewer lines than other entries on this list.

Python is also an incredibly versatile language, as it’s used for a variety of applications, such as back-end development, mobile applications, writing system scripts, and data science. It’s also used heavily in machine learning, artificial intelligence, and web development. All of these fields will continue to grow exponentially throughout the year, which means its importance in 2021 will continue to rise in kind.


JavaScript has been around since 1995, and yet it continues to be one of the most in-demand, widely-used programming languages in the world. This is primarily because of its usage in web development and app development – particularly for the Android market. It’s also a vital language for the banking sector and big data, which means it has a lot of sway in the world’s financial and business sectors.

JavaScript’s prevalence means it’s also the go-to for millions of operational websites on the internet because of its ability to add responsible elements to webpages. Its popularity is also helped by its implementation and use by tech giants like Facebook, Google, and Microsoft. With the abandonment of Flash at the end of 2020, JavaScript (along with HTML5 and CSS 3) has also now become a replacement for the multimedia software platform. With all of this in mind, it’s not hard to believe that 2021 could mark the year of further growth for JavaScript.


Go, also known as Golang, is a programming language developed by Google for APIs and web applications. As with almost everything the tech supergiant touches, Go has become one of the fastest-growing languages among developers due to its similarities to C. It’s also popular for its high performance, efficiency, and ability to be used in Cloud Computing.

Like Python, it’s another easy-to-learn language that can be used for everything from system programming to machine-learning, big data, and web development. It’s currently being adopted by companies like Google, BBC, Facebook, Twitch, Medium, and Alibaba and as 2021 progresses, its reach will surely grow.


C# (pronounced ‘C Sharp’) was originally designed by Microsoft for building Windows applications but has become a major tool for 3D, 2D, and VR game development. While C# may not seem as multi-use as some of the other programming languages on this list, the gaming industry’s player base and revenue have increased exponentially year after year. In 2020, possibly with the aid of global lockdowns to counteract COVID-19, video game revenue across the world increased 20% to $179.7 billion. “[This has made] the video game industry a bigger moneymaker than the global movie and North American sports industries combined.” With further lockdowns because of COVID-19 already in place, 2021 will undoubtedly see the further rise of video games as a dominating pastime for the world.

These reasons and more are why C# will be a major player in the programming landscape in 2021. Anyone who wants to enter game development should add C#, as well as C and C++, to their programming repertoire to stay truly competitive in the industry.


Swift is a dedicated iOS programming language created by Apple, which means it will maintain its importance for development in 2021 as iOS applications continue to grow in popularity. Swift is also relatively easy to learn, includes an interactive and expressive code, and eliminates entire classes of unsafe code which makes its use fairly low-stakes. All of these points signal it as an ideal language for developers looking to expand into the Apple marketplace’s dedicated OS software. Swift’s growth in 2021 will continue with the help of further support directly from Apple. The company recently introduced SwiftUI, a program that helps developers seamlessly write entire apps with code that can be easily shared across all Apple platforms.

While it doesn’t currently have an overwhelming amount of uptake amongst the developer community, many applications in the Apple store have nevertheless been created with Swift. Furthermore, that number is steadily growing as more programmers take advantage of Apple’s native support for the programming language. Therefore, for those who want to tap into an up-and-coming language on the ground floor, Swift is the perfect place to focus their energy in 2021. As Apple places more and more support behind it, its popularity and use will only grow.

The world has a number of months ahead before COVID-19 lockdowns ease, so it’s the perfect time to spend your free moments bolstering your programming skills. There are a wide plethora of programming languages that are on track to gain popularity in 2021. However, we believe our truncated list includes some of the very best languages to add to your programmer or developer toolkit. Why not start your year off right by improving your professional and technical standing this year with some of the languages on our list?

Are you looking to upgrade the programming language used in the technology within your business to better prepare for 2021 and beyond? Calibre Consulting boasts an experienced developer team and ongoing support to meet your software, website, and mobile app needs. We’re ready and willing to serve Canada and the world. Contact us for a free consultation!

Interested in more articles like this? Check out our back catalog or subscribe to our newsletter to keep up-to-date on our latest articles.

Share this article