Is there a way to do something similar to a SourceSafe label in svn? I know of the bransch/tag, but I would like to have a more lightweight way of just setting a name for a
Tags in Subversion are the correct way to do this. They might not "look" lightweight because they are tree copies, but because Subversion copies very lazily, it will not take up any disk space beyond that which is used to record the transaction "copied /trunk/ to /tags/whatever". The Subversion book has more information about tags.