The best replacement for ldap is active directory.

The best alternatives to ldap are rated as following:
★★★★★  active directory
★★★★  radius
★★★★  nis
★★★  ad
★★★  kerberos
★★★  ldaps
★★★  openid
★  saml
★  dap
★  cas
★  windows authentication
★  oauth
★  openldap
  dns
  adam
  ntlm
  gc
  radius authentication
  ads
  sso
  secure ldap
  slapd
  single sign on
  global catalog
  jndi

Your alternative for ldap is not listed? Suggest!
Speaking about ldap, one probably shouldn't forget about active directory.

Other search terms related to ldap and their ratings are:
★★★★★ active directory
★★ tls
★★ kerberos
★ samba
★ pam
★ weblogic
★ kerberos authentication
★ ssh keys
★ authentication
★ jboss
active directory authentication
domain controller
ad
spring security example
apache
You have in mind a companion for ldap and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ldap in all years. Click on graph for more.
ldap
active directory
radius