For the implementation of SVN subversion system, I used open source solution CollabNet, (CollabNet Subversion Server version 1.7.5) which is installed and set up on Windows server 2003, together with Apache web server. As a client application, we are using TortoiseSVN. Authentication is done by using Apache web server authentication. (.htaccess)

SVN server is 2 times upgraded in 3 years without any problems, the last upgrade was from version 1.6.17-4 to 1.7.5-1. (August 2012.)