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TIOBE Index for January 2018

January Headline: Programming Language C awarded Language of the Year 2017

Surprise, surprise, oldtimer language C appears to be the fastest grower of 2017 in the TIOBE index and thus is declared programming language of the year. The C language gained 1.69% in 2017. Usually this is not sufficient to become language of the year, so C has actually won because there were no outstanding alternatives. Runner ups are Python (+1.21%) and Erlang (+0.98%). Despite all this, it is remarkable to see that C is getting more popular after a steep downward trend that started at the end of 2015. C had a rating of more than 17% at that time and lost more than 10% after that in the next 18 months. A possible reason for this revival is that C is very popular in the growing manufacturing and machine industry (including the automotive market). The most interesting jumps forward in the TIOBE index in 2017 were R (from 16 to 8), Erlang (from 44 to 23) and Kotlin (from 89 to 39). Promising languages such as Julia, Hack, Rust and Kotlin were not able to hit the top 20 or even the top 30.

The TIOBE Programming Community index is an indicator of the popularity of programming languages. The index is updated once a month. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. Popular search engines such as Google, Bing, Yahoo!, Wikipedia, Amazon, YouTube and Baidu are used to calculate the ratings. It is important to note that the TIOBE index is not about the best programming language or the language in which most lines of code have been written.

The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system. The definition of the TIOBE index can be found here.

Jan 2018 Jan 2017 Change Programming Language Ratings Change
11Java14.215%-3.06%
22C11.037%+1.69%
33C++5.603%-0.70%
45changePython4.678%+1.21%
54changeC#3.754%-0.29%
67changeJavaScript3.465%+0.62%
76changeVisual Basic .NET3.261%+0.30%
816changeR2.549%+0.76%
910changePHP2.532%-0.03%
108changePerl2.419%-0.33%
1112changeRuby2.406%-0.14%
1214changeSwift2.377%+0.45%
1311changeDelphi/Object Pascal2.377%-0.18%
1415changeVisual Basic2.314%+0.40%
159changeAssembly language2.056%-0.65%
1618changeObjective-C1.860%+0.24%
1723changeScratch1.740%+0.58%
1819changeMATLAB1.653%+0.07%
1913changeGo1.569%-0.76%
2020PL/SQL1.429%-0.11%


Other programming languages

The complete top 50 of programming languages is listed below. This overview is published unofficially, because it could be the case that we missed a language. If you have the impression there is a programming language lacking, please notify us at tpci@tiobe.com. Please also check the overview of all programming languages that we monitor.

PositionProgramming LanguageRatings
21Dart1.426%
22SAS1.419%
23Erlang1.250%
24COBOL0.798%
25ABAP0.697%
26Alice0.652%
27D0.628%
28Lua0.620%
29Ada0.569%
30REXX0.562%
31Transact-SQL0.502%
32Scala0.465%
33Fortran0.431%
34LabVIEW0.416%
35Apex0.410%
36Lisp0.386%
37Logo0.329%
38Bash0.322%
39Kotlin0.313%
40F#0.305%
41Prolog0.301%
42Groovy0.264%
43VHDL0.257%
44Haskell0.251%
45ActionScript0.247%
46Rust0.230%
47Julia0.226%
48Hack0.211%
49Tcl0.209%
50Clojure0.207%

The Next 50 Programming Languages

The following list of languages denotes #51 to #100. Since the differences are relatively small, the programming languages are only listed (in alphabetical order).

  • (Visual) FoxPro, 4th Dimension/4D, Applescript, Awk, BBC BASIC, bc, Bourne shell, CFML, CL (OS/400), Clean, Clipper, Common Lisp, Crystal, Elm, Emacs Lisp, Forth, Icon, Inform, Io, J, Korn shell, Ladder Logic, Lasso, LiveCode, Maple, ML, Modula-2, Monkey, MOO, MQL4, NATURAL, NXT-G, OCaml, OpenCL, OpenEdge ABL, Oz, PL/I, PostScript, PowerShell, Programming Without Coding Technology, Q, Ring, RPG (OS/400), Scheme, Smalltalk, SPARK, Standard ML, Stata, VBScript, Verilog


This Month's Changes in the Index

This month the following changes have been made to the definition of the index:

  • There are lots of mails that still need to be processed. As soon as there is more time available your mail will be answered. Please be patient.

Very Long Term History

To see the bigger picture, please find below the positions of the top 10 programming languages of many years back. Please note that these are average positions for a period of 12 months.

Programming Language2018201320082003199819931988
Java121116--
C2122111
C++3433225
C#45711---
Python576122716-
Visual Basic .NET613-----
JavaScript798720--
PHP8645---
Perl985439-
Ruby1010919---
Objective-C1834446---
Ada27161714672
Lisp31121413853
Pascal1281419971036

Programming Language Hall of Fame

The hall of fame listing all "Programming Language of the Year" award winners is shown below. The award is given to the programming language that has the highest rise in ratings in a year.

YearWinner
2017medal C
2016medal Go
2015medal Java
2014medal JavaScript
2013medal Transact-SQL
2012medal Objective-C
2011medal Objective-C
2010medal Python
2009medal Go
2008medal C
2007medal Python
2006medal Ruby
2005medal Java
2004medal PHP
2003medal C++


Bugs & Change Requests

This is the top 5 of most requested changes and bugs. If you have any suggestions how to improve the index don't hesitate to send an e-mail to tpci@tiobe.com.

  1. Apart from "<language> programming", also other queries such as "programming with <language>", "<language> development" and "<language> coding" should be tried out.
  2. Add queries for other natural languages (apart from English). The idea is to start with the Chinese search engine Baidu. This has been implemented partially and will be completed the next few months.
  3. Add a list of all search term requests that have been rejected. This is to minimize the number of recurring mails about Rails, JQuery, JSP, etc.
  4. Start a TIOBE index for databases, software configuration management systems and application frameworks.
  5. Some search engines allow to query pages that have been added last year. The TIOBE index should only track those recently added pages.


Frequently Asked Questions (FAQ)

  • Q: Am I allowed to show the TIOBE index in my weblog/presentation/publication?

    A: Yes, the only condition is to refer to its original source "www.tiobe.com".

  • Q: How may I nominate a new language to be added to the TIOBE index?

    A: If a language meets the criteria of being listed (i.e. it is Turing complete and has an own Wikipedia entry that indicates that it concerns a programming language) and it is sufficiently popular (more than 5,000 hits for +"<language> programming" for Google), then please write an e-mail to tpci@tiobe.com.

  • Q: I would like to have the complete data set of the TIOBE index. Is this possible?

    A: We spent a lot of effort to obtain all the data and keep the TIOBE index up to date. In order to compensate a bit for this, we ask a fee of 5,000 US$ for the complete data set. The data set runs from June 2001 till today. It started with 25 languages back in 2001, and now measures more than 150 languages once a month. The data are available in comma separated format. Please contact sales@tiobe.com for more information.

  • Q: Why is the maximum taken to calculate the ranking for a grouping, why not the sum?

    A: Well, you can do it either way and both are wrong. If you take the sum, then you get the intersection twice. If you take the max, then you miss the difference. Which one to choose? Suppose somebody comes up with a new search term that is 10% of the original. If you take the max, nothing changes. If you take the sum then the ratings will rise 10%. So taking the sum will be an incentive for some to come up with all kinds of obscure terms for a language. That's why we decided to take the max.

    The proper way to solve this is is of course to take the sum and subtract the intersection. This will give rise to an explosion of extra queries that must be performed. Suppose a language has a grouping of 15 terms, then you have to perform 32,768 queries (all combinations of intersections). So this seems not possible either... If somebody has a solution for this, please let us know.

  • Q: What happened to Java in April 2004? Did you change your methodology?

    A: No, we did not change our methodology at that time. Google changed its methodology. They performed a general sweep action to get rid of all kinds of web sites that had been pushed up. As a consequence, there was a huge drop for languages such as Java and C++. In order to minimize such fluctuations in the future, we added two more search engines (MSN and Yahoo) a few months after this incident.

  • Q: Why is YouTube used as a search engine for the TIOBE index?

    A: First of all, YouTube counts for less than 10% of all ratings, so it has hardly any influence on the index. YouTube has been added as an experiment. It qualified for the TIOBE index because of its high ranking on Alexa. YouTube is a young platform (so an indicator for popularity) and there are quite some lectures, presentations, programming tips and language introductions available on YouTube.