The best-known programming languages: which, where and when to use

There are hundreds of programming languages, and every beginner asks which one to learn and which to use. The truth is there is no single best language, there is a suitable language for a given task. Let us go through the best-known ones and explain what each is suited to.

What a programming language is

A programming language is a way we give a computer instructions. Each language has its strengths and the areas where it is most used. The choice of language depends on what you are building: a website, a mobile app, a game, a system or data analysis.

The best-known languages and what they suit

Python, the all-rounder and king of simplicity

Python is today one of the most popular languages. It is clear, easy to read and suitable for beginners.

• Where it suits: artificial intelligence and machine learning, data analysis, automation, scripts, websites (server side), scientific computing.
• For whom: beginners, data analysts, AI projects. This relates to the article on local AI on your own hardware.

JavaScript, the language of the web

JavaScript is the language that runs in the browser and brings websites to life. Without it, pages would be static.

• Where it suits: interactive websites and web applications, the frontend (what the visitor sees), but via Node.js also the backend (server). It also suits mobile and desktop apps.
• For whom: web developers, creators of quality websites and e-shops.

Java, the workhorse of companies

Java is a robust and stable language widespread in large company systems and in Android apps.

• Where it suits: large enterprise applications, banking systems, Android apps, server solutions.
• For whom: corporate development where stability and long-term support matter.

C#, the home of Microsoft and games

C# (pronounced C sharp) is a language from Microsoft, strong in its ecosystem and in game development.

• Where it suits: company applications on the Microsoft platform, desktop programs for Windows, games (via the popular Unity game engine).
• For whom: developers in the Microsoft environment, game creators.

PHP, the language behind most websites

PHP is a server-side language on which a large part of the internet runs, including many content systems and e-shops.

• Where it suits: websites, e-shops, content systems, website backends.
• For whom: web developers, building and editing websites.

C and C++, performance and foundations

C and C++ are fast and powerful languages close to the hardware. They are more demanding, but give maximum control.

• Where it suits: operating systems, high-performance games, embedded systems, drivers, IoT devices.
• For whom: systems and performance developers.

SQL, the language of databases

SQL is not a classic programming language, but a language for working with databases. It is used almost everywhere data is handled. More in the article on SQL databases.

Others worth mentioning

• Swift for iPhone and Mac apps.
• Kotlin a modern alternative to Java, especially for Android.
• Go and Rust modern languages for fast and reliable server and system solutions.

A brief comparison

How to choose a language

• Want to make websites? JavaScript and PHP, possibly Python.
• Interested in AI and data? Python.
• Mobile apps? Swift (iPhone), Kotlin or Java (Android).
• Enterprise systems? Java or C#.
• Starting out and want an all-rounder? Python for its simplicity.

More important than the language are often the fundamentals: logic, problem solving and understanding how things work. These carry over between languages.

Conclusion

The best programming language is the one suited to what you want to build. Python rules AI and data, JavaScript the web, Java and C# companies, PHP websites and C/C++ performance. When choosing, be guided by the project’s goal, not by popularity.

Need to develop an app, a website or connect systems and unsure which technology is right? Get in touch, we will advise and design a tailored solution.

This article is part of our Software and system overview.