Softerra produce an LDAP browser which is released free.. I have used this for a number of years since version 2, its now on version 4.5 and while its not been updated for about 18 months, its still as useful as ever !
If you are working with AD, Domino or another LDAP based directory, this utility is a must have.
Setup multiple profiles, save the passwords if required and build your searches, it even remembers all the searches for re-use.
Check it out here clicking on the LDAP Browser 4.5 tab.