DanCoulter

This is a very simple and straightforward plugin to let you automatically blog the commit messages from your public Subversion repository. For now, only one project is supported.
Currently, it requires that PHP have shell access to the “svn” command. This means that it has to run on a *nix server with subversion installed. If you’re not sure whether your server supports this, try typing “svn info” at your shell. If it says that it cannot find the program “svn”, you don’t have it installed.

WP-Subversion

Automatically post commit messages from your public Subversion repository.

anorgan

Don’t have access to your hosting provider so you can do subversion update? Or your hosting doesn’t have subversion installed. Well, this is where my plug-in comes in!
SVN upgrade uses database (wp_svn table) in which it stores the latest repository revision. If a new revision is out, you can do the upgrade, otherwise it will tell you that it is on the latest version.

SVN upgrade

Upgrade your WordPress to the latest release the most easiest way possible!

WP-Subversion vs SVN upgrade