Certainly! As of my last knowledge update in September 2021, I can suggest six programming languages that were popular and valuable to learn. However, please note that the popularity and relevance of programming languages can change over time.
Python
Python has been a favorite for many years due to its simplicity, versatility, and extensive libraries. It's widely used in web development, data analysis, machine learning, and automation.
JavaScript
JavaScript is essential for web development, both on the front end (using frameworks like React, Angular, or Vue.js) and the back end (using Node.js).
Java
Java remains a popular choice for building enterprise-level applications, Android app development, and large-scale systems.
Rust
Rust is known for its focus on safety and performance, making it suitable for systems programming, game development, and other performance-critical applications.
Go (Golang)
Go's simplicity and efficiency make it well-suited for building scalable and concurrent systems, microservices, and network applications.
Kotlin
Kotlin has gained traction for Android app development, offering a modern alternative to Java with concise syntax and enhanced features.
Keep in mind that the technology landscape can change, and new languages may have emerged or gained popularity since then. It's always a good idea to research the latest trends and job market demands to make an informed decision about which programming languages to learn in 2023.