Apache Directory Server
Apache Directory Server: A free, self-hosted LDAP and Kerberos server for identity-directory infrastructure. Ranked #31 of 31 in Directory Software by our editors (5.1/10); pricing: Free plan; best for teams needing a self-hosted LDAP directory server.
At a glance
- Editor score5.1 / 10
- PricingFree plan
- Best forTeams needing a self-hosted LDAP directory server
- Free planYes
- Paid fromFree
- Facts checked24 Sep 2026
Where it wins
- Supports LDAPv3, Kerberos 5, and the Change Password Protocol
- Runs standalone or embeds in Java applications
- Offers pluggable backends, partitions, and network protocol providers
Where it doesn't
- Requires self-hosted deployment rather than a packaged cloud IAM service
- Its focus is identity infrastructure, not searchable public listings
- Administration and extension center on LDAP and Java components
Our verdict on Apache Directory Server
Apache Directory Server (ApacheDS) is an open-source directory server for teams that need LDAP-based identity infrastructure. It supports LDAPv3 and Kerberos 5, plus the Change Password Protocol, and can run as a standalone server or be embedded in Java applications. Windows, macOS, and Linux are listed platforms, with deployment self-hosted. That makes ApacheDS relevant to organizations building or operating directory services, not to teams seeking software for publishing searchable public listings. Its documented fit spans small, mid-market, and enterprise organizations, though deployment and operation remain the team's responsibility.
Its architecture is a notable strength for environments that need to adapt directory behavior: ApacheDS offers pluggable directory backends and partitions, a modular network layer with pluggable protocol providers, and extension through custom partitions and interceptors. Server functions can be administered through LDAP using its system backend. Alongside LDAP and Kerberos, the listed capabilities include SASL authentication mechanisms, access control, and password policy; replication is covered in documentation. These options suit teams with the technical capacity to integrate and manage a directory server, especially Java application developers who may want an embeddable service. They are less suited to buyers looking for a finished cloud identity service with a packaged management experience.
ApacheDS is free and distributed under the Apache Software License, with an open-source model rather than paid product tiers. The published support channels are community and documentation, so buyers should be prepared to rely on those channels and their own operational expertise. The product is a focused infrastructure component: LDAP and Kerberos support, self-hosted deployment, and extensibility are central, while it is not positioned as a public directory-listing system or packaged cloud IAM offering. Choose it when you need an adaptable LDAP/Kerberos server that your team can deploy and maintain; choose another category of product if you need searchable public listings or a managed cloud IAM service.
Your product? Our editors can test Apache Directory Server in depth and publish a review, labelled as paid · from $149/mo →
Apache Directory Server pricing
Apache Directory Server fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Listing limit | Not verified |
| Custom listing fields | Not verified |
| Search and filters | Not verified |
| Location features | Not verified |
| Public submissions | Not verified |
| Paid listings | Not verified |
| Import and export | Not verified |
| Deployment | Self-hosted |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | directory.apache.org |
| Facts checked | 24 Sep 2026 |
Alternatives to Apache Directory Server
- Appy Pie AI Directory Website BuilderA flexible no-code option for launching AI-assisted directory websites.9.2
- Classified ListingA broad directory toolkit with AI, monetization, and native mobile app support.8.8
- Brilliant DirectoriesA hosted directory platform for gated memberships, payments, content, and email.8.7
See all Apache Directory Server alternatives →
Used Apache Directory Server? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Apache Directory Server for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Apache Directory Server is listed in our Directory Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/apache-directory-server/"><img src="https://www.itechguides.com/best/badge/apache-directory-server.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update