language usage indicators
Data generated on Sun Apr 6 21:58:40 2008
Welcome to LUI. This page is a compilation of various sources of data concerning programming language usage. Instead of intertrepeting, it simply provides a few metrics that might be useful to others considering the question of language "popularity".

LUI is generated by a small and simple framework written in Perl. It can easily be extended or modified. The source can be downloaded here (zip).

Raw data for some or all of the below metrics can be downloaded in CSV format: raw.csv

NormalizedGeneralSearch

Similar to the TIOBE index, this searches for the terms "[LANGUAGE] programming" in several search engines and returns a normalized ranking for each language in the index.

SourceForgeMostActive

Determines the languages used in SourceForge's "All Time Most Active" projects.

SourceForgeProjectLangs

Number of projects in a given language on SourceForge.

SourceForgeTopAllTime

Checks 500 of the "Top All Time" projects on SourceForge, and generates a metric based on the primary language used.

GoogleCodeSearch

Returns results from Google code search. Uses the lang: directive, which returns files written in a given language from within archives, SVN, and standalone. (Note: If the Ruby, Python, or C# numbers look low, this is because Code Search tends to flake out every once and a while, and these languages suffer the most.)
Source queries
lang: directivefile: directive
C/C++
C
Java
C++
PHP
Perl
Python
C#
Ruby

OhlohNetStats

Looks at language statistics from ohloh.net and makes comparisons. (ohloh has a very nice page showing graphical statistics for their numbers. It can be viewed here.) The "/per" columns below show the ratio of the given column to the number of projects.
A concern of Arbinger Systems