There are four different categories of super funds. These have different primary features and are more applicable to certain people than they are to others.
Retail super funds
Anyone can join retail funds. They are mostly run by banks and investment companies:
Industry super funds
Anyone can join bigger industry funds, but smaller ones may only be open to people in certain industries i.e. health.
Public sector super funds
Only available for government employees
Corporate super funds
Arranged by employers for employees. Large companies may operate corporate funds under the board of trustees. Some corporate funds are operated by retail or industry funds, but availability is restricted to employees
Self-managed super funds
Private super fund you manage yourself. Many more nuances to this type of fund. Most prominent feature is the autonomy over investment.