SVNServer 1.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is Langui. The application is included in System Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Simple SVN Server is a simple app that lets you setup and run your own SVN (Subversion) service instantly. With Simple SVN Server, you can setup a SVN server in one minute.
Note: Authentication is not available in Simple SVN Server, so all reads / writes are anonymous, please use this app in a closed LAN where everybody is friendly.
You may want to check out more Mac applications, such as Bulldog, Launch! or Mood Mouse, which might be related to SVNServer.