How can I share a workspace in Eclipse (Helios or Indigo) so that many developers are able to work in one project?
I know about SVN but I don\'t want to use that. >
The workspace concept is absolutely not designed to be shared by multiple instance of Eclipse. I think it is a really bad idea to try to do that.
If you want developpers to collaborate on the same code base, you have to share the Eclipse projects whatever the sharing media (network filesystem, SCM, ...). Then each developpers must import the shared projects in their local workspaces (without copying them locally).
Now if you have some configuration to share to all developpers, you should make those configurations on the project preferences insteand of setting them for the local workspace.