Programming Language Popularity Increases for R, Julia, and Rust (but Not Go)

TechRepublic reports: The TIOBE Index is a monthly indicator of programming-language popularity based on factors including skilled engineers, courses, and third-party vendors. The October 2026 rankings show a largely stable top 10, with R overtaking SQL and Julia returning to the top 20 for the first time in three years. [SQL has risen to #9 from #10 in October of 2025 — back when R ranked only #13.] Python remains No. 1, followed by C, C++, Java, C#, and JavaScript, while Rust holds its No. 10 position. [A year ago Rust ranked only #16.] Outside the top 10, Julia climbs from No. 21 to No. 18, and TIOBE introduces Mandarin Chinese search terms into its methodology to broaden the index's geographic representation. Dropping out of the top ten is Go, which fell from #8 in October of 2025 to #11. And Delphi/Object Pascal has plummeted from #9 to #19. TIOBE CEO Paul Jansen argues that Julia's growing popularity "is largely driven by the demand for modern programming languages that combine high performance with ease of learning, particularly for numerical computing." Python offers an accessible, high-level approach to numerical computing, but performance can become a bottleneck. C++, on the other hand, delivers excellent performance but comes with a steeper learning curve and a lower level of abstraction. Julia aims to bridge this gap by combining the best of both worlds... Apart from Julia, two other languages are knocking on the door of the TIOBE top 20: Dart and OCaml. Dart jumps from #41 to #27 this month. Thanks to its popular UI toolkit Flutter, Dart has been hovering around the edge of the top 20 for quite some time. OCaml, on the other hand, might come as a surprise. It jumps from #38 to #26 this month, driven in part by its growing use in real-time trading systems and parsing technology.

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