Free ldap software for linux

Autodir is for creating directories transparently to the applications accessing them based on available information from sources like password database, group database.
Currently it supports creating home directories and group directories. Autodir can be used to create home, group directories for ldap/NIS/SQL Unix accounts.
Autodir depends on Linux autofs kernel module to transparently detect directory requests and create them on demand.
Autodir also supports calling backup programs transparently when specific directory not in use so that whole system does not need to bring offline for backup purpose.
Autodir is written using posix threads.
Enhancements:
- Code optimized in autofs events handling main section.

ldapdns is a fast and rhobust root-nameserver that can outperform bind and djbdns on medium to large installations, and will scale well both up and down.

the secret is that ldapdns uses a threaded core, and takes advantage of an external directory. its extremely simple, and it does not run under user-control as root.

its ideal for small and large installations, because it queries the ldap server directly, updates are immediate. you dont have to rebuild constant databases, or wait for bind to get its shit in gear.

but ldapdns is a work-in-progress. i use it on a production network, as do many others. but its up to you to make it best for your network.

Postphpix is a mail subsystem based on Postfix and LDAP, it started with a PHP interface to manage mail domains via web, but now it can be managed from command line too through the command phpxadm. I started this project needing a mail subsystem that should be:
.secure
no system users
.scalable
daemons intercommunicates via socket so can be splitted on many phisical servers for high traffic systems using eventually SSL encription
.reliable
after splitting the daemons, you can get systems reduntant using for example heartbeat clustering software, and the ldap database allow you to manage and backup user information quickly or realize a mail folder backup server easily
.packageable
for many years I used Qmail, now I need more license flexibilty, so I decided to study and use Postfix, this architecture is the mail subsystem of the Argo GNU/Linux distribution that soon will be available as free software too
Enhancements:
- /etc/postphpix/postphpixconf.sh moved in /usr/lib/postphpix/

Fljud is a Jabber User Directory (JUD) that uses an LDAP directory for user information. You may find Fljud to be very useful if youve already got a Jabber server using LDAP for account authentication and vcards.
Fljud can be used to replace your existing JUD, but can also be quickly adapted to present and edit other information from your LDAP directory using Jabber.
Main features:
- Configurable fields: You can easily display almost any attribute data from your LDAP directory for each user.
- More capable searching: Search in any requested attribute, with a choice of AND or OR based search patterns.
- LDAP updates: When a user changes their details in the JUD, their LDAP record is updated.
- Configurable browsing: Users can be grouped into arbitrary, browsable folders. Groups can be based on any LDAP search criteria. This depends on Jabber client support.
- Field/attribute locking: Fields can be locked so that their LDAP attributes value cannot change, or cannot be removed.
- Flexible configuration: Fljud can be used to provide Jabber access to other types of LDAP objects. Alternate XML based configuration files can be specified.
- No XDB/JUD synchronisation problems: As both your authentication and JUD are using live LDAP records.
Version restrictions:
- Fljuds speed is probably less than that of the default Jabber 1.4 JUD, but it should be fast enough for internal Jabber servers.
- User accounts must already exist in the LDAP server and on the Jabber server.
- The establised Jabber standards do not have any form field types other than simple text fields with single word labels. Fljud only supports this basic form type. Later versions of Fljud will support the new Jabber data/form features as they develop.
- The flexible search feature does not now conform to new Jabber/XMPP standards.

LDAPab is a Web-based address book for small companies. LDAPab features a public address book which is writable for all company staff and a personal address book for each staff member. LDAPab requires an existing LDAP server to authenticate users.

Asterisk::LDAP is a perl module for generating Asterisk 1.0 compatible configuration files from an LDAP directory tree.
The package includes everything you need to get started, including the module itself, schema files, and example code.
Functionality is provided to see if a reload is necessary and optionally send asterisk a reload command when updates are made. Included is a script that can be called from voicemail.confs externpass option to update a users voice mailbox PIN number in LDAP.
Asterisk::LDAP is currently capable of generating extensions.conf, voicemail.conf, and musiconhold.conf. Support is planned for sip.conf, iax.conf, and meetme.conf.
Enhancements:
- Contexts are now written with a serial number and are not updated unless the serial number is incremented.
- This allows for granular and guaranteed consistent updates.
- The API has been dramatically cleaned up.
- Where before a number of calls were required to set up before getting any useful data out, only one call is required and three more optional calls can help automate most of the configuration.
- The developer may now choose to read the information from LDAP or write the contents to a set of files or to access the internal data structures directly for manual formatting.

mod-vhost-ldap is an Apache 2.x module for storing and configuring virtual hosts from LDAP. mod-vhost-ldap project supports DocumentRoot, ScriptAlias, ServerName, ServerAlias, ServerAdmin, and SuexecUserGroup directives.

Its built on top of mod_ldap, so it uses its caching capabilities and can be used with a threaded Apache httpd.