Open Source Authentication Software - Page 2
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VoidAuth
Single Sign-On for Your Self-Hosted Universe
VoidAuth is a self-hosted, open-source Single Sign-On (SSO) authentication provider that simplifies managing user access and identity for a suite of private applications. Built around standards like OpenID Connect (OIDC), it serves as a central authentication authority so that users can log in once and gain secure access to multiple services without duplicating credentials. The platform offers a user and group management interface where administrators can invite users, enable self-registration, and configure policies like multi-factor authentication and password resets with email verification. Designed with flexibility in mind, VoidAuth supports features such as passkeys and customizable branding, making it adaptable to a wide range of deployment environments and aesthetic preferences. -
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OpenPAM is an open source PAM library that focuses on simplicity, correctness, and portability.
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JSS
An authoring tool for CSS which uses JavaScript as a host language
A lib for generating Style Sheets with JavaScript. JSS is an authoring tool for CSS which allows you to use JavaScript to describe styles in a declarative, conflict-free and reusable way. It can compile in the browser, server-side or at build time in Node. JSS is framework agnostic. It consists of multiple packages, the core, plugins, framework integrations and others. If you’re interested in playing around with JSS, you can use an online code playground. Try a Hello World example on CodeSandbox. JSS generates actual CSS, not Inline Styles. It supports every existing CSS feature. CSS rules are created once and reused across the elements using its class name in contrary to Inline Styles. Also, when DOM elements get updated, previously created CSS rules are applied. JSS generates unique class names by default. It allows avoiding the typical CSS problem, where everything is global by default. It completely removes the need for naming conventions. -
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ORY Oathkeeper
A cloud native Identity & Access Proxy / API (IAP)
ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. The BeyondCorp Model is designed by Google and secures applications in Zero-Trust networks. An Identity & Access Proxy is typically deployed in front of (think API Gateway) web-facing applications and is capable of authenticating and optionally authorizing access requests. The Access Control Decision API can be deployed alongside an existing API Gateway or reverse proxy. Ory offers a support plan for Ory Network Hybrid, including Ory on private cloud deployments. If you have a self-hosted solution and would like help, consider a support plan! The team at Ory has years of experience in cloud computing. Ory's offering is the only official program for qualified support from the maintainers. -
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Pocket ID
Easy-to-use OIDC provider that allows to authenticate with passkeys
Pocket-ID is an open-source OpenID Connect (OIDC) identity provider that prioritizes passwordless authentication using modern passkeys, making secure login easier for self-hosted services. By supporting passkeys instead of traditional passwords, Pocket-ID aligns with evolving web authentication standards, letting users sign in with devices, hardware keys like YubiKey, or platform-managed credentials. It’s designed to be simpler to install and use than larger identity solutions like Keycloak or Hydra and integrates smoothly with other self-hosted applications that understand OIDC protocols. With Docker-ready setup and broad community interest, the project supports a fully self-managed authentication stack where you control user identity, sessions, and login flows without relying on third-party services. It has gained popularity in the self-hosted ecosystem as a straightforward way to add single sign-on capabilities and modern security to your apps. -
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Uptrace
Open source APM: OpenTelemetry traces, metrics, and logs
Uptrace is an open-source APM tool that supports distributed tracing, metrics, and logs. You can use it to monitor applications and set up automatic alerts to receive notifications via email, Slack, Telegram, and more. Uptrace is an open-source APM that supports OpenTelemetry tracing, metrics, and logs. You can use it to monitor applications and set up alerts to receive notifications via email, Slack, Telegram, and more. Uptrace collects and analyzes data from a variety of sources, including servers, databases, cloud providers, monitoring tools, and custom applications. It provides a unified view of the entire technology stack, enabling you to monitor the performance, availability, and health of your systems in real-time. Uptrace allows to monitor your whole application stack on a compact and informative dashboard. You get a quick overview for all your services, hosts, and systems. -
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2FAS Auth Browser Extension
Source code for 2FAS Auth Browser Extension
2FAS Auth Browser Extension is a cross-browser plugin that integrates the 2FAS multi-factor authentication platform directly into the user’s web browsing workflow, helping streamline login flows by interfacing with web pages and 2FA token generation in a seamless way. Once installed in browsers like Chrome, Firefox, or others that support standard extension APIs, it can detect 2FA prompts on login forms and offer to fill or suggest one-time passwords generated by your 2FAS mobile clients or local vault, reducing friction and manual copy-paste steps. The extension communicates securely with companion mobile or desktop clients to fetch or synchronize token data, respecting encryption and privacy boundaries so that secrets are never exposed to the extension itself without user consent. It also lets users manage or view registered accounts, add new ones by scanning QR codes via companion apps, and handle token organization from within browser UI elements. -
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Aegis Authenticator
A free, secure and open source app for Android
Aegis Authenticator is a free and open-source two-factor authentication (2FA) app for Android that helps users secure their online accounts by generating cryptographic one-time passwords (OTPs) such as TOTP and HOTP codes. Unlike many proprietary MFA apps, Aegis is designed with user privacy and local control in mind, storing secrets only on the device in an encrypted vault protected by PIN or biometric unlock, and offering features like backups encrypted with a user-chosen passphrase. It supports importing accounts from QR codes, exporting encrypted backups for safe storage, and grouping or labeling tokens so managing dozens of accounts is simple. Aegis also offers options for custom token configuration, including changing issuer names, digits, and intervals, and includes a robust recovery mechanism in case a device is lost. It has a material design interface that makes navigation intuitive, and its open-source license ensures transparency. -
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Authelia
The Single Sign-On Multi-Factor portal for web apps
Authelia is an open-source authentication and authorization server and portal fulfilling the identity and access management (IAM) role of information security in providing multi-factor authentication and single sign-on (SSO) for your applications via a web portal. It acts as a companion for common reverse proxies. With a compressed container size smaller than 20 megabytes and observed memory usage normally under 30 megabytes, it's one of the most lightweight solutions available. Written in Go and React, authorization policies and many other backend tasks are completed in mere milliseconds and login portal loading times of 100 milliseconds makes it one of the fastest solutions available. Processors can use a lot of electricity, but when idle usage is basically so low that you can't measure it, and active usage in a small business environment being under 1% you can rest easy (with the exclusion of password hashing). -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Casdoor
An open-source Identity and Access Management (IAM)
A UI-first Identity Access Management (IAM) / Single-Sign-On (SSO) platform supporting OAuth 2.0, OIDC, SAML and CAS, integrated with Casbin RBAC and ABAC permission management. Within a few steps, we can setup a Casdoor app and realize our authorization management. Casdoor has a front-end back-end separation architecture, with maneuverable web UI and supporting high concurrency. Casdoor is supporting multi-languages, using i18n to support multi-languages UI. For more languages support, welcome to propose in our community. Casdoor SDK provides many functions, such as identity authentication, user management, resource upload, etc. Access to Casdoor is very convenient, please visit How to Connect to Casdoor for details. Casdoor also support sign up directly. By filling your Username, Display name, Password and Email, after your receive your Email code, you can sign up in Casdoor. -
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Central Authentication Service (CAS)
Identity & Single Sign On for all earthlings and beyond
Welcome to the home of the Apereo Central Authentication Service project, more commonly referred to as CAS. CAS is an enterprise multilingual single sign-on solution and identity provider for the web and attempts to be a comprehensive platform for your authentication and authorization needs. CAS is an open and well-documented authentication protocol. The primary implementation of the protocol is an open-source Java server component by the same name hosted here, with support for a plethora of additional authentication protocols and features. Monitor and track application and system behavior, statistics and metrics in real-time. Manage and review audits and logs centrally, and publish data to a variety of downstream systems. Manage and register client applications and services with specific authentication policies. Cross-platform client support (Java, .NET, PHP, Perl, Apache, etc). -
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CloudFoundry UAA
CloudFoundry User Account and Authentication (UAA) Server
The UAA is a multi tenant identity management service, used in Cloud Foundry, but also available as a stand alone OAuth2 server. Its primary role is as an OAuth2 provider, issuing tokens for client applications to use when they act on behalf of Cloud Foundry users. It can also authenticate users with their Cloud Foundry credentials, and can act as an SSO service using those credentials (or others). It has endpoints for managing user accounts and for registering OAuth2 clients, as well as various other management functions. -
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OpenAuth
Universal, standards-based auth provider
OpenAuth is an authentication system aimed at modern serverless and edge runtimes, providing a cohesive way to add sign-in flows and session management to web apps. It supports common patterns such as OAuth with popular identity providers, email-based links or codes, and passkeys/passwordless options, while exposing a simple API that fits full-stack frameworks. The project is designed to be infrastructure-friendly, aligning with managed stores and serverless platforms so sessions, webhooks, and callbacks work reliably at scale. It emphasizes secure defaults, including robust token handling, CSRF protections, and clear session lifecycles, while leaving room for customization where apps need it. Developers can bring their own database or storage layer and wire it through adapters without rewriting core logic. The goal is to remove boilerplate around sign-up/sign-in, user profiles, and authorization checks so teams can ship features faster. -
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appwrite
Secure Backend Server for Web, Mobile & Flutter Developers
Appwrite is a self-hosted and cloud backend-as-a-service platform that provides developers with all the core APIs required to build any application. Build your entire backend within minutes and scale effortlessly using Appwrite's open-source platform. Add Authentication, Databases, Functions, Storage, and Messaging to your projects using the frameworks and languages of your choice. -
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z
Tracks your most used directories, based on 'frecency'
Tracks your most used directories, based on 'frecency'. After a short learning phase, z will take you to the most 'frecent directory that matches ALL of the regexes given on the command line, in order. For example, z foo bar would match /foo/bar but not /bar/foo. The rank of directories maintained by z undergoes aging based on a simple formula. The rank of each entry is incremented every time it is accessed. When the sum of ranks is over 9000, all ranks are multiplied by 0.99. Entries with a rank lower than 1 are forgotten. Frecency is a portmanteau of 'recent' and 'frequency'. It is a weighted rank that depends on how often and how recently something occurred. As far as I know, Mozilla came up with the term. To z, a directory that has low ranking but has been accessed recently will quickly have higher rank than a directory accessed frequently a long time ago. -
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nuBuilder Forte
nuBuilder Forte is a cloud database builder.
nuBuilder Forte is the 4th version of nuBuilder. A open-source browser-based tool created for developing web-based database applications. nuBuilder uses either MySQL or MariaDB databases and gives its users the ability to do database operations like... • Search, Create, Insert, Read, Update, Delete ✪ With low-code tools that create ... - Forms with the Form Builder - Fast Reports - Database queries with the SQL Builder - Customised date and number formats with the Format Builder - Calculated fields with the Formula Builder - Email Templates - Move and resize objects. - Further customisation that can be done with JavaScript and PHP. ✪ nuBuilder stores all forms, reports, company data and PHP/JavaScript code in MySQL. You can backup your entire application within a single database file. ✪ Easy installation: - Download and unzip the nuBuilder files - Upload to your webserver - Create a database (e.g. nubuilder4) and optionally a user - Make a copy of -
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Cosign: Web Single Sign-On
Open Source Web Single Sign-On
An open source project originally designed to provide the University of Michigan with a secure single sign-on web authentication system. Cosign is part of the National Science Foundation Middleware Initiative (NMI) EDIT software release. -
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2FAS Auth for iOS
Source code for 2FAS Auth iOS app
2FAS Auth for iOS is the official iPhone and iPad client for the 2FAS authentication platform, offering users a secure and privacy-focused mobile app to manage multi-factor authentication (MFA) tokens for their online accounts. The app generates time-based one-time passwords (TOTP) and counter-based one-time passwords (HOTP) that are widely required for logging into services with enhanced security, and it lets users scan QR codes or manually enter secret keys to register new accounts. Designed with native iOS conventions, it supports Face ID and Touch ID to quickly unlock the app while keeping authentication secrets encrypted locally on the device, so sensitive data never leaves the user’s control. The client is also structured to work offline, meaning you can generate codes without a network connection, and it integrates with companion browser extensions or other 2FAS sync tools so tokens can be backed up or restored across devices securely. -
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Ember Simple Auth
A library for implementing authentication/authorization in Ember.js
Ember Simple Auth is a lightweight library for implementing authentication/authorization with Ember.js applications. It has minimal requirements with respect to application structure, routes etc. With its pluggable strategies it can support all kinds of authentication and authorization mechanisms. it maintains a client-side session and synchronizes its state across multiple tabs/windows of the application. it authenticates the session against the application's own server, external providers like Facebook etc. The session service is the main interface to the library. It provides methods for authenticating and invalidating the session as well as for setting and reading session data. The session store persists the session state so that it survives a page reload. It also synchronizes the session state across multiple tabs or windows of the application so that e.g. a logout in one tab or window also results in a logout in all other tabs or windows of the application. -
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MaxKey
MaxKey SSO ,Leading-Edge IAM-IDaas(Identity and Access Management)
Maxkey Single Sign On System, which means the Maximum key, Leading-Edge IAM/IDaas Identity and Access Management product, supports OAuth 2.x/OpenID Connect, SAML 2.0, JWT, CAS, SCIM, and other standard protocols, and provide Secure, Standard and Open Identity management (IDM), Access management (AM), Single Sign On (SSO), RBAC permission management and Resource management. MaxKey focuses on performance, security, and ease of use in enterprise scenarios, is widely used in industries such as healthcare, finance, government, and manufacturing. -
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Pow
Robust, modular, and extendable user authentication system
Pow is a robust, modular, and extendable authentication and user management solution for Phoenix and Plug-based apps. Pow is built to be modular, and easy to configure. The configuration is passed to function calls as well as plug options, and they will take priority over any environment configuration. It's ideal in case you got an umbrella app with multiple separate user domains. The easiest way to use Pow with Phoenix is to use a :otp_app in function calls and set the app environment configuration. It will keep a persistent fallback configuration that you configure in one place. Pow ships with a session plug module. You can easily switch it out with a different one. Pow is extremely modular and fully customizable. As your platform scales, each moving part can be modified or replaced ad-hoc. Several extensions are included in Pow so you with no effort can add secure features to your app. -
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Proton Authenticator for Android
Official Android implementation of a modern two-factor authentication
Proton Authenticator for Android is Proton’s official Android implementation of a modern two-factor authentication (2FA) app, designed to generate secure, time-based one-time passwords (TOTPs) and support multi-account authentication workflows with strong privacy and encryption features. The app enables users to link 2FA tokens for their online accounts, scan QR codes, and generate rotating verification codes that enhance login security across services that support TOTP standards. Built with native Android tooling and following modern design conventions, it integrates with Android’s notifications and system UI while maintaining local encryption of stored secrets so that authentication tokens are never exposed in plaintext outside the device. It also supports backup and encrypted sync with the associated Proton account, helping users recover 2FA codes across devices — a feature that many standalone token generators lack without risking security trade-offs. -
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Sentry
Cross-platform application monitoring and error tracking software
Sentry is a cross-platform, self-hosted error monitoring solution that helps software teams discover, monitor and fix errors in real-time. The most users and logs will have to provide are the clues, and Sentry provides the answers. Sentry offers enhanced application performance monitoring through information-laden stack traces. It lets you build better software faster and more efficiently by showing you all issues in one place and providing the trail of events that lead to errors. It also provides real-time monitoring and data visualization through dashboards. Sentry’s server is in Python, but its API enables for sending events from any language, in any application. More than fifty-thousand companies already ship better software faster thanks to Sentry; let yours be one of them!
