[voxio]

Are there any free OpenLDAP alternatives out there worth mentioning?

[buster]

Although not used myself, Suns OpenDS: http://www.opends.org/

Just for reference, other directories:

  IBM Tivoli
  Microsoft Active Directory
  Novell eDirectory
  Red Hat Directory Server
  Critical Path Directory Server

[hapless]

Fedora DS is an open source fork of Netscape 5.1. RHDS is basically the same product. High-performance -- if you need tens of thousands of accounts, hundreds or thousands of simultaneous queries, a netscape derivative is what you want.

Sun ONE DS is free-as-in-beer. It's a newer derivative of the same codebase (Netscape) that became FDS.

Apache DS is something I've been experimenting with. Java-based. Easy to get up and running, comes with a really great default schema.

Sun OpenDS looked cool, but since the oracle acquisition, I can't bring myself to be interested in it.

[unperson]

Also: http://directory.apache.org/