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TIOBE Programming Community Index for July 2009

July Headline: Objective-C on its way to top 20 thanks to success iPhone

The TIOBE Programming Community index gives an indication 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. The popular search engines Google, MSN, Yahoo!, Wikipedia and
YouTube are used to calculate the ratings. Observe 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.

Position Jul 2009	Position Jul 2008	Delta in Position	Programming Language	Ratings Jul 2009	Delta Jul 2008	Status
1	1		Java	20.452%	-0.89%	A
2	2		C	17.319%	1.37%	A
3	3		C	10.419%	-0.27%	A
4	5		PHP	9.269%	-0.26%	A
5	4		(Visual) Basic	7.789%	-2.66%	A
6	8		C#	4.540%	0.54%	A
7	7		Python	4.435%	-0.54%	A
8	6		Perl	4.200%	-0.93%	A
9	9		JavaScript	3.513%	0.76%	A
10	10		Ruby	2.567%	-0.17%	A
11	11		Delphi	1.998%	-0.01%	A
12	13		PL/SQL	0.891%	0.16%	A
13	14		SAS	0.794%	0.17%	A
14	24		RPG (OS/400)	0.740%	0.41%	A
15	16		Pascal	0.707%	0.27%	A
16	26		ABAP	0.703%	0.44%	A-
17	20		Lisp/Scheme	0.607%	0.22%	B
18	12		D	0.593%	-0.63%	B
19	18		Lua	0.531%	0.12%	B
20	27		MATLAB	0.512%	0.26%	B

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Long term trends

The long term trends for the top 10 programming languages can be found in the
line diagram below.

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.

Position	Programming Language	Ratings
21	Objective-C	0.509%
22	ActionScript	0.425%
23	Fortran	0.400%
24	COBOL	0.399%
25	Logo	0.394%
26	Ada	0.394%
27	FoxPro/xBase	0.338%
28	PowerShell	0.327%
29	Scratch	0.274%
30	Transact-SQL	0.271%
31	Prolog	0.243%
32	Scala	0.228%
33	Erlang	0.203%
34	Haskell	0.198%
35	ML	0.196%
36	LabVIEW	0.191%
37	Focus	0.155%
38	Awk	0.153%
39	Smalltalk	0.150%
40	Forth	0.145%
41	Alice	0.142%
42	J	0.133%
43	Tcl/Tk	0.129%
44	JavaFX Script	0.129%
45	Caml/F#	0.118%
46	NXT-G	0.118%
47	Groovy	0.114%
48	APL	0.111%
49	Bourne shell	0.109%
50	CL (OS/400)	0.107%

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).

• ABC, AD, Algol, Alpha, Applescript, Beta, Boo, C shell, cg, Clean,
  Cobra, cT, Curl, Dylan, Eiffel, Euphoria, Factor, Fan, Icon, IDL,
  Inform, Io, Lingo, MAD, Magic, Maple, Mathematica, MAX/MSP, MOO, MUMPS,
  Natural, Oberon, Occam, Oz, PL/I, Postscript, PowerBuilder, Progress,
  Q, R, Revolution, REXX, S-lang, SIGNAL, SPSS, SuperCollider, VBScript,
  Verilog, VHDL, XSLT

July Newsflash - Brought to you by Paul Jansen

• 
  Thanks to sponsor Versant we
  have obtained data for the TIOBE index back to 1984. The methodology we
  used is to scan all Usenet newsgroups and take the 3 years' average.
  The results of this interesting survey will be soon published and
  integrated in the TIOBE index. In order to show already some results we
  have added a 10 years and 25 years delta column to the "bigger picture"
  table below.
• 
  After being around the 50th position for many years, Objective-C
  suddenly gains popularity. This is thanks to the fact that this
  programming language is used to write applications for the iPhone.
  Another language that is claiming a high position is JavaFX Script. It
  jumped from 72 to 44 in one month's time.
• 
  This month the following changes have been made to the index:
  
  • 
    The grouping of the programming language Progress has been improved considerably thanks to Randall Harper.
  • Georg Wrede pointed out that it is better not to take a 5 years
    difference in the bigger picture below, because 5 years ago the TIOBE
    index appeared to be very volatile for half a year. So we changed the 5
    years column in a 4 years column for the time being.
• To see the bigger picture, please find the positions of the top 10
  programming languages from 4, 10 and 25 years ago in the table below.
  
  
  
  

  Programming Language	Position July 2009	Position July 2005	Position July 1999	Position July 1984
  Java	1	2	4	-
  C	2	1	1	1
  C	3	3	2	-
  PHP	4	4	-	-
  (Visual) Basic	5	6	3	5
  C#	6	7	19	-
  Python	7	8	-	-
  Perl	8	5	5	-
  JavaScript	9	9	12	-
  Ruby	10	27	-	-

• 
  The previous winners of the "Language of the Year" award are shown below.
  
  
  
  

  Year	Winner
  2008	C
  2007	Python
  2006	Ruby
  2005	Java
  2004	PHP
  2003	C

• 
  In the tables below some long term trends are listed about categories of languages.
  The object-oriented paradigm is still very high at 54.2%, but functional languages grow fastest.
  The popularity of dynamically typed languages seems to stabilize (see trend diagram below).
  
  
  
  

  Category	Ratings July 2009	Delta July 2008
  Object-Oriented Languages	54.2%	-1.7%
  Procedural Languages	41.8%	0.7%
  Functional Languages	2.8%	0.7%
  Logical Languages	1.1%	0.2%

  
  
  
  
  
  

  Category	Ratings July 2009	Delta July 2008
  Statically Typed Languages	60.2%	1.8%
  Dynamically Typed Languages	39.8%	-1.8%