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An open source implementation of the Lightweight Directory Access Protocol
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What is OpenLDAP?

It is a free, open-source implementation of the Lightweight Directory Access Protocol. Lightweight Directory Access is an application protocol that is used to crosscheck information on the server end.
OpenLDAP is a tool in the User Management and Authentication category of a tech stack.

Who uses OpenLDAP?

26 companies reportedly use OpenLDAP in their tech stacks, including MIT, JustChunks, and Demonware.

62 developers on StackShare have stated that they use OpenLDAP.

OpenLDAP Integrations

Gitea, pfSense, Atlassian Stash, iRedMail, and FreeRADIUS are some of the popular tools that integrate with OpenLDAP. Here's a list of all 11 tools that integrate with OpenLDAP.
Decisions about OpenLDAP

Here are some stack decisions, common use cases and reviews by companies and developers who chose OpenLDAP in their tech stack.

Joshua Dean Küpper
CEO at Scrayos UG (haftungsbeschränkt) · | 3 upvotes · 9.1K views

OpenLDAP is pretty much unrivaled, when it comes to the LDAP-Protocol. Although it is not hard to spot, that the general structure looks a little bit anachronistic in a time of microservices, cloud-native applications and dockerization, it is very reliable, stable and still actively developed.

We use OpenLDAP within a docker-container und interact with it through another docker-container, housing phpLDAPadmin. LDAP is still the gold-standard regarding a centralized, digital directory of the company accounts, structures and permissions and that's why we use it.

It is necessary, however, to install extensions for some features like enhanced group queries, better password algorithms and a few other features, that I'd like to be shipped by default.

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OpenLDAP Alternatives & Comparisons

What are some alternatives to OpenLDAP?
FreeIPA is an integrated Identity and Authentication solution for Linux/UNIX networked environments. A FreeIPA server provides centralized authentication, authorization and account information by storing data about user, groups, hosts and other objects necessary to manage the security aspects of a network of computers.
A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.
Amazon Cognito
You can create unique identities for your users through a number of public login providers (Amazon, Facebook, and Google) and also support unauthenticated guests. You can save app data locally on users’ devices allowing your applications to work even when the devices are offline.
It is an authorization framework that enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf.
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OpenLDAP's Followers
128 developers follow OpenLDAP to keep up with related blogs and decisions.