Net::LDAP for Perl -- The perfect fusion of LDAP and Perl Programming, with 100% native perl functionality. If you're a systems administrator, you simply must check this out.
Perl and LDAP on Windows -- Click here if you want to use your windows system for Perl / LDAP development
PerlDAP -- The original LDAP libraries for Perl, written by Leif Hedstrom, Michelle Hedstrom, Kevin McCarthy and also Clayton Donley. This perl library leverages a C binary; it is faster but less portable.