Velo is an open Identity and Access Management platform, with many IDM services such as provisioning, access control, password synchronization, audit & compliance, self service interfaces and much more.
DREK stands for Directory REpliKator; replicates one LDAP (sub)tree into another. Replaces attributes (base DN) to match the destination tree. Generates LDIF file which can be reviewed and imported by other means, like ldapmodify.