C# wins Tiobe Programming Language of the Year honors for 2025
Briefly

C# wins Tiobe Programming Language of the Year honors for 2025
"Tiobe's monthly index ratings are based on a formula that assesses the number of skilled engineers worldwide, courses, and third-party vendors pertinent to a language. Popular websites such as Google, Amazon, Wikipedia, Bing, and more than 20 others are used to calculate the ratings. Elsewhere in the index for January 2026, Jansen said Go appears to have permanently lost its place in the top 10 last year."
"The same seems true for Ruby, which fell out of the top 20 and is unlikely to return anytime soon, according to Jansen. But Perl made a surprising comeback, rising from position number 32 in January 2025 to number 11 by the end of the year. Another resurgent language is R, which returned to the top 10 in 2025, driven largely by continued growth in data science and statistical computing, Jansen said."
"The C language, now ranked second, and C++, now in fourth place, swapped positions in the index over the past year. The Tiobe index top 10 for January 2026: The alternative Pypl Popularity of Programming Language Index assesses language popularity based on a formula that analyzes how often language tutorials are searched on in Google."
Tiobe's monthly index ratings use a formula assessing the number of skilled engineers worldwide, courses, and third-party vendors relevant to each language and draw data from Google, Amazon, Wikipedia, Bing, and over twenty other websites. Go appears to have permanently lost its place in the top 10 during the prior year. Ruby fell out of the top 20 and is unlikely to return soon. Perl rose from position 32 in January 2025 to number 11 by year-end, marking a significant comeback. R returned to the top 10 in 2025 driven by growth in data science and statistical computing. C and C++ swapped positions, with C now second and C++ fourth.
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