Admin4
portable administration tool for LDAP, DNS, IMAP, PostgreSQL and more
... entries with schema support. In addition, high-level editing of objects like users, groups and samba domains is supported. Custom objectClasses and attributes can easily be added.
The IMAP plugin can browse and modify mailbox metadata, such as name, acl and quota.
The PostgreSQL plugin features a nice query tool, a data modification tool and an object browser.
The development has moved to https://github.com/andreas-p/admin4, including all release files.