TIOBE Index for September 2025: Top 10 Most Popular Programming Languages
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Perl experienced a slight decline in the TIOBE Programming Community Index rankings between August and September, falling one position to ninth in the top ten. However, Perl remains significantly more popular this year than it was last year, so its rising trajectory continues to be notable. Perl sits at 2.03% in TIOBE’s proprietary ranking system in September, up from 0.64% in January. Last year, Perl held the 27th position.
The TIOBE Index is an indicator of which programming languages are most popular within a given month. Each month, we examine the patterns and changes in the index, particularly the top ten.
Top 10 programming languages in September 2025
According to the TIOBE Programming Community index ...
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