Caveats: This chart only counts publicly visible mod_dav_svn servers. Private installations, such as those behind corporate firewalls, are not counted. Also, Subversion's other network server, svnserve, is not represented here at all, only because no systematic survey has been made for svnserve. Anecdotal evidence from the Subversion mailing lists and IRC channels indicates that svnserve is about as popular as mod_dav_svn.

In other words, this chart is probably useful for estimating the rate of growth of Subversion's adoption, but not for determining the absolute number of Subversion installations in the world at a given time.

This information is taken from the Security Space Apache Modules Survey. Thanks Security Space!

Date# Servers
February 2008221,547
January 2008199,432
December 2007187,093
November 2007180,831
October 2007169,939
September 2007159,055
August 2007155,426
July 2007137,575
June 2007133,665
May 2007117,267
April 2007103,852
March 200795,679
February 200784,813
January 200777,027
December 200668,988
November 200663,145
October 200654,247
September 200646,525
August 200640,672
July 200638,939
June 200635,082
May 200633,001
April 200629,396
March 200626,540
February 200623,861
January 200621,084
December 200520,278
November 200518,893
October 200517,588
September 200515,233
August 200513,545
July 200512,808
June 200511,534
May 20059,793
April 20058,751
March 20057,897
February 20056,505
January 20055,565
December 20044,995
November 20044,783
October 20044,187
September 20044,174
August 20043,863
July 20042,941
June 20042,502
May 20042,113
April 20041,792
March 20041,424
February 20041,307
January 20041,162
December 20031,009
November 2003969
October 2003782
September 2003665
August 2003522
July 2003448
June 2003369
May 2003308
April 2003250
March 2003222
February 2003158
January 200370