1. JavaScript
   JavaScript is the most used programming language in the world. JavaScript is famous for its various frameworks, such as Node.js, and you get a language capable of server-side scripting too. JavaScript is mainly used for Front-end and back-end web development, mobile apps and developing games.

2. Python
   Python is used in server-side development, web and mobile app development to building machine learning software, there's nothing Python can't do. Also, this programming language has a vast collection of libraries, tools, and frameworks that make it a must in the field of Data Science and Machine Learning.

3. Java
   This is one of the oldest object-oriented programming languages. It is still one of the most popular and highly sought-after. Java can also be efficiently used in handling vast amounts of data and can run on any operating system. Java is mainly used for Android App Development, Web Development, Software and Finance & e-commerce.

4. C#
   This was built by Microsoft and inspired by the C programming language. However, C# is way more advanced than the C programming language. Also, it is dynamic and fully integrated with the .NET framework. C# is loved by most developers as it is used for making 2D and 3D games using the Unity gaming engine.

5. Go
   Go was developed by Google in 2007 for APIs and web applications. Go has recently become one of the fastest-growing programming languages due to its simplicity, as well as its ability to handle multicore and networked systems and massive codebases.

6. TypeScript
   TypeScript is a newcomer to top programming language lists, but it’s making headway. It was developed in 2012 by Microsoft and is a typed version of JavaScript that is well suited for large code bases. TypeScript is used to create JavaScript-based projects with typing in both client-side and server-side development, making useful for catching errors and preventing systemic issues.

Happy Coding!