Stack Overflow, a question-and-answer site for global programmers, has released its 2018 report on the most popular programming languages based on responses from over 100,000 developers. The top language cited is Javascript, which allows developers to build interactive elements on websites, making it one of the most common languages on the Web. HTML, while technically a markup language rather than a programming language, placed second in the ranking, as it forms the basis of all Websites. Third on the list was Cascading Style Sheets, or CSS, used to design Websites and browser-based apps. Structured Query Language (SQL), which allows users to handle large amounts of data by accessing and managing databases, placed fourth in the ranking, followed by Java, the most common tool for building Android apps. Following Java in the ranking were, in descending order, Bash/Shell, Python, C#, PHP, C++, C, Typescript, Ruby, and Swift.
Source: 14 most popular programming languages according to Stack Overflow study – Business Insider