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.

flashpixx

This plugin is not be in developing anymore, all functionality is moved to a new plugin <a href="https://wordpress.org/extend/plugins/repositoryzip/" rel="ugc">Repository Zip</a>
The plugin creates zip download links within articles and pages of a subversion repository. On each call the subversion revision number, link text, css name and download 
name can be set, so that each link points to different subversion. The plugin need no configuration or something else.

SVN Zip

With this plugin a zip download link of a subversion repository can be created within blog articles and pages

WP-Subversion vs SVN Zip