Programming languages are organized into tiers depending on their popularity, and there are three tiers.

Top Tier

Mainstream languages which fall into the top tier include Java, Python, Java Script, PHP, C#, Ruby, Objective -C and C++. Even though some languages are losing popularity, there are those that potential programmers should know of, in order to have a brighter career in the industry.

Second Tier

Second-tier languages have managed to build strong support communities, thus proving their worth in the industry. There aren’t many software companies using them, and the languages include Scala, Swift, Haskell and Clojure.

However, even though rare; there are some companies that still make use of second-tier language services. The most used from the second-tier are Swift and Go. These have the potential to move from second to top-tier in the next few years.

Third Tier

Programming languages in the third-tier are emerging and just started to gain popularity. However, not all languages in this class are new, there are some that have been in there for a long time . Amongst the emerging third-tier programming languages is Elm. Elm is gaining popularity within the JavaScript industry because of its preference to functional programming which is rapidly rising.

Rust language was developed to replace C and C++ versions, and is becoming the fastest growing language used in web developing. The 2016 Stack Overflow developer survey crowned Rust as the “most loved” technology, rating with the number of users and reviews. Just like Ruby, Crystal is working to improve its performance to the rank of C and C++ and its command is similar to Ruby language.

As Ruby language continues to gain popularity, Crystal will also boost the application performance and take it to the next level. Elixir programming language is greatly inspired by Ruby language, but it mostly focuses on providing low-latency and high availability systems.