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GLAuth

GLAuth-v2.5.2 open-source

GLAuth is a secure, easy-to-use LDAPLDAPA protocol for querying and modifying directory services, standardized under RFC 4511, commonly used to look up users, groups, and attributes in corporate identity stores like Active Directory. authentication server with configurable backends for centralizing account management across infrastructure.

Summary

GLAuth is an open-source LDAP authentication server, released under the MIT license, that runs as a single portable executable rather than a full directory service deployment. You configure it with a file and start it directly on the OS of your choice, storing user data in flat files, S3, a SQL database, or by proxying to an existing LDAP server, and it supports two-factor authentication and TLS. It's aimed at developers and system administrators who need to centralize account, SSH key, and password management across Linux and OSX machines without standing up Active DirectoryActive DirectoryMicrosoft's directory service for Windows networks that centralises authentication and authorisation; cyber tools target or integrate with it because it controls identity and access across most enterprise environments. or OpenLDAPOpenLDAPAn open-source implementation of the Lightweight Directory Access Protocol, maintained by the OpenLDAP Project, used to store and query structured identity data like users and groups over a network., and its README describes it as a lightweight alternative to both, usable either as a gateway in front of legacy systems or standalone. The project dates to 2014, has drawn 50 contributors, and remains active with 17 releases in the tracked window and its most recent one 27 days ago.

GLAuth is a secure, easy-to-use LDAP authentication server with configurable backends for centralizing account management across infrastructure.

How GLAuth helps

How do I let every Linux and OSX machine on my network check the same set of accounts and SSH keys without standing up Active Directory or OpenLDAP?

it runs as one portable executable reading a config file, so any host pointed at it over LDAP resolves against a single user list instead of a locally-replicated one

Can I add security to a legacy application without rewriting how it authenticates?

it sits in front of the existing system as a gateway and injects Two-Factor or TLS on top of the traffic it already speaks, so the application keeps using plain LDAP calls

Where should the actual user records live?

the config points at flat files, S3, a SQL database, or an existing LDAP server, and GLAuth answers LDAP queries from whichever one it's pointed at

Can I chain more than one backend to build up the features I need?

multiple backends can be linked together so features like Two-Factor are injected as the request passes through, rather than requiring one backend to do everything

How do I confirm the server is actually answering authentication requests before I put it in front of real systems?

standard LDAP tooling can bind and search against its listen address, so a query returning the expected entries confirms it's serving correctly before anything depends on it

What happens to my SSH key and password management as I add more cloud servers?

since accounts, keys, and passwords are centralized in the one directory it serves, adding a server means pointing it at the same GLAuth instance rather than maintaining separate local account lists

all 13 features, with the evidence for each →

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Features

13 capabilities · 2 backed by code, an API document or a real run

Built from GLAuth's releases, docs, README and our own runs. “Seen” marks the month we first spotted a release the vendor didn't date. Group names and tags are our labels.

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What GLAuth offers you

  • Command-line interface3
  • Plugin system2
  • Plugin API support1
All capabilities 13 capabilities
LDAP and LDAPS server verified Exposes an LDAP and TLS-secured LDAPS server with configurable listen addresses and certificate/key paths. 10 releases · 4 other sources · first seen Dec 2018

Also counts toward: Command-line interface

release 10 total

  • Adds the anonymousdse backend option in the configuration sample for controlling anonymous DSE access. v2.2.0 · Jul 2023 · source · release history
  • Adds searchMaybePosixAccounts filter to respect the searchBaseDN configuration key, limiting LDAP search scope. v2.2.0 · Jul 2023 · source · release history
  • New Restrict service login capability to limit service account access v2.1.0 · Feb 2022 · source · release history
  • Custom Attributes mapping feature allowing objectClass modifications and new attributes like employeeType and jpegPhoto v2.1.0 · Feb 2022 · source · release history
  • Enables service login restriction for tighter access control v2.1.0-RC1 · Nov 2021 · source · release history
  • Adds employeeType attribute support for LDAP entries v2.1.0-RC1 · Nov 2021 · source · release history

command line

Configuration file management shipped Supports loading multiple configuration files via a `conf.d` directory and provides a command to validate configuration syntax before starting the service. 6 releases · first seen Dec 2018

Also counts toward: Command-line interface

release

  • Adds a new check subcommand (glauth check) to validate configuration files before starting the service v2.2.0-RC1 · Nov 2022 · source · release history
  • conf.d/ directory support for loading multiple configuration files (Beta) v2.1.0 · Feb 2022 · source · release history
  • Support multiple configuration files via a conf.d directory v2.1.0-RC1 · Nov 2021 · source · release history
  • Introduces the [[Backends]] configuration directive to act backends as middleware chains (while retaining backward compatibility with [Backend]) v2.0.0 · Aug 2021 · source · release history
  • Allows configuring DN format via new configuration keys. v1.1.2 · Feb 2020 · source · release history
  • Includes ldapsearch in the Docker container image to enable custom runtime healthchecks v1.1.1 · Dec 2018 · source · release history
Observability and metrics shipped Exports Prometheus metrics by default and allows configuration of OpenTelemetry tracing endpoints, sampling rates, and service names. 5 releases · first seen Jul 2018

release

  • Enables OpenTelemetry tracing configuration via the main config file using the otlp_tracer and otelsql sections, including endpoint, service_name, and sampling_rate fields. GLAuth-v2.5.0 · Apr 2026 · source · release history
  • Allow tracing configuration via the main config file v2.3.1 · Feb 2024 · source · release history
  • Introduce context for OTel spans into the handler package v2.3.1 · Feb 2024 · source · release history
  • Exports Prometheus metrics by default for observability integration v2.2.0-RC1 · Nov 2022 · source · release history
  • Adds 2fa configuration option to enable two-factor authentication for user logins v1.1.0 · Jul 2018 · source · release history
Plugin system evolution shipped Allows loading plugin logic directly from the main configuration file and moves external plugins (like Unix PAM) out of the core binary. 4 releases · first seen Nov 2022

Also counts toward: Plugin system

release

  • check plugin compatibility runs during release to verify plugins are compatible with the new GLAuth version before distribution. GLAuth-v2.5.2 · Jul 2026 · source · release history
  • Introduces a new embedded_plugins config key to load plugin logic directly from the main config file without external binaries. GLAuth-v2.5.0 · Apr 2026 · source · release history
  • Adds the Unix PAM Authentication plugin to enable Unix PAM backend support v2.2.0-RC1 · Nov 2022 · source · release history
  • Plugins have been moved out of the core repository; the Unix PAM Authentication plugin is no longer bundled in this binary and must be obtained from its own repo. v2.2.0-RC1 · Nov 2022 · source · release history
Proxy mode LDAP support shipped Enables proxying of LDAP requests to backends with support for server-side pagination and result set handling. 3 releases · first seen Aug 2021

release

  • Adds proxying compatibility for LDAP paged results via the new proxy_ldap_paging_enabled boolean config option. GLAuth-v2.5.0 · Apr 2026 · source · release history
  • Adds compatibility with LDAP paging protocols when operating in proxy mode, allowing the tool to handle large result sets that require server-side pagination. v2.4.0 · Apr 2025 · source · release history
  • Enables OTP injection across chained backends: any backend in a chain can inject an OTP value into the password before reaching a non-OTP-aware backend v2.0.0 · Aug 2021 · source · release history
Configuration key type inspection verified Displays the type of every defined configuration key when requested. 1 release · 2 other sources · first seen Nov 2021

Also counts toward: Command-line interface

release

  • Switches logging implementation from the previous logger to Zerolog, changing log output format and available fields v2.2.0-RC1 · Nov 2022 · source · release history

docs

  • Lightweight LDAP authentication server with configurable backends including files, S3, SQL, and existing LDAP servers.

command line

  • --types — When set, the types of every defined key will be shown. v2.1.0-RC1 · Nov 2021 · command-line history
Service account access restriction shipped Provides the ability to restrict login capabilities for service accounts to limit their access scope. 2 releases · first seen Aug 2021

release

  • New Restrict service login capability to limit service account access v2.1.0 · Feb 2022 · source · release history
  • Implements stronger, salted passwords using bcrypt hashing algorithm v2.0.0 · Aug 2021 · source · release history
Platform and architecture support shipped Extends binary and container image compatibility to include RISC-V architectures. 1 release · first seen Apr 2026

release

  • Adds RISC-V platform support for container images and binaries. GLAuth-v2.5.0 · Apr 2026 · source · release history
Backend configuration expansion shipped Adds the ability to configure a custom S3 endpoint for storage backends via configuration keys. 1 release · first seen Sep 2023

release

  • Allows configuration of a custom S3 endpoint via the plugins.s3.endpoint config key v2.2.1 · Sep 2023 · source · release history
Database backend support shipped Extends the cyber tooling to include database backends such as MySQL, SQLite, and Postgres. 1 release · first seen Aug 2021

Also counts toward: Plugin API support, Plugin system

release

  • Adds support for Database Backend Plugins, starting with MySQL, SQLite, and Postgres via the new plugin system v2.0.0 · Aug 2021 · source · release history
UserPrincipalName binding shipped Enables LDAP operations to bind and browse using the userPrincipalName attribute. 1 release · first seen Aug 2021

release

  • Adds support for userPrincipalName binding and browsing via LDAP operations v2.0.0 · Aug 2021 · source · release history
Application-specific password generation shipped Allows users to generate application-specific passwords instead of using their main credentials. 1 release · first seen Feb 2020

release

  • Adds App Password Support allowing users to generate application-specific passwords instead of using their main credentials. v1.1.2 · Feb 2020 · source · release history
Cloud backend authentication shipped Adds support for authenticating users via cloud backends, specifically the owncloud10 backend using the graph API. 1 release · first seen Feb 2020

release

  • Adds owncloud10 backend using the graph API for user authentication. v1.1.2 · Feb 2020 · source · release history

Lines in monospace are the tool's own words: help text parsed from its source, or an endpoint from its API document. Under release, a line is our summary of a dated release. Under docs, it is quoted from the tool's own documentation or website. Each links back to the source it came from.

Score card

  1. Shipping velocity releases a month, last 12 months
  2. Documentation quality release-notes rubric, 0–100
  3. Breaking-change discipline how rarely a release breaks users, and notice given
  4. Maintenance risk quiet time against its own cadence, maintainers
  5. Innovation & surface new capabilities, API and MCP surface
  6. Community health
  7. Contributor trend distinct committers, this year against last
  8. Maintainer concentration bus factor now against a year ago
  9. Issue backlog trend issues closed per issue opened, 12 months
  10. Responsiveness median time to a maintainer’s first reply

Nine scores for GLAuth, each built from the releases, notes and API history this site tracks — and, on Researcher and Business, where it stands among every measured tool in its category and how that has moved.

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Each score is 0–100 on a published rubric, derived from data this site already shows. A dimension we cannot measure says so — it is never scored 0 and never enters a rank.

How this is scored
  • Shipping velocity — releases a month over the last 12 months, on a log scale where 16 a month scores 100. Needs 3 releases in the window.
  • Documentation quality — the release-notes rubric published on the analytics page, unchanged.
  • Breaking-change discipline — the share of releases carrying a breaking change (none scores 100, half or more scores 0). Only projects that label breaking changes are measured: a clean record cannot be told from an unlabelled one.
  • Maintenance risk — quiet time measured against the tool's own release cadence (quiet longer than 90 days and three typical gaps scores 0), plus the number of active maintainers and whether contributors are growing, where known. Higher is lower risk.
  • Innovation & surface — new capabilities in the feature ledger this year, API and MCP operations added, and the share of commits that are features: the mean of whichever we hold.
  • Community health (open-source tools only) — each is a direction, not a size: contributors this year against last, the bus factor now against a year ago, and issues closed per issue opened, where steady scores 50, doubled 100 and halved 0; plus the median time to a maintainer's first reply (an hour scores about 100, a month or more 0). A commercial card has no repository and carries none of the four.
  • Documented delivery (commercial tools) — when a vendor's documented new capabilities have slowed against its own baseline, that counts against the overall standing as heavily as two low dimensions. Steady delivery, or too little history to judge, leaves the standing alone; it is never a sixth score.
  • Open-source tools are scored on repository signals; commercial tools on their published changelog. Ranks compare tools within one category and one profile and need at least five measured peers; the overall standing needs three ranked dimensions. Best-in-breed or consolidator is a shape, not a quality, and is never scored.

Release-note detail over time

See how much detail GLAuth puts in its release notes, quarter by quarter, and compare it with tracked tools in the same category. This history uses up to ten retained, reviewed notes per tool; sparse or blank older quarters may reflect that limit.

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Releases

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13 entries

  1. July 20261
  2. April 20261
  3. April 20251
  4. February 20241
  5. September 20231
  6. July 20231
  7. November 20221
  8. February 20221
  9. November 20211
  10. August 20211
  11. February 20201
  12. December 20181
  13. July 20181
    Show

    13 entries

    Project health

    Issue, contributor and maintainer activity in glauth/glauth, 2023-10 – 2026-09, as of 2026-09-25. Twelve-month figures first; the trend lines run the whole window.

    1. Contributors 5 +2 vs prior 12 months
    2. Maintainers 1 +1 joined · −1 left, last 12 months
    3. Bus factor 1 committers behind half the commits
    4. Community-filed 100% of issues opened, last 12 months
    5. Median time to close 3.6 days first maintainer reply 3.6 days
    6. Open backlog 78 of 220 issues ever filed
    1. Issues opened / month 0 · 0 communitymaintainers
    2. Open backlog 78
    3. Contributors / month 2
    4. Commits / month 10
    5. Stars 2,851
    Issue themes, last 12 months
    • other 100%

    Counts from the project's public repository and git history; no individuals are identified. Maintainers are the committers covering 80% of the last year's commits. how we measure this

    Libraries its release ships

    What its latest release locks, checked against known advisories.

    None of its release's images build from a lockfile we can read.

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