Secure your apps with robust Authentication solutions! Explore password managers, MFA, SSO & more. Protect user data and simplify login processes.
Authentication · Security
OpenID Certified SSO & MFA Portal for Reverse Proxies
Authentication · Ecommerce · Security
Open-source Identity Provider for SSO, SAML, OIDC, and Zero Trust
Authentication
Open-source Auth0/Clerk/Firebase alternative with passkeys, SSO, and MFA
Security · Authentication
Secure, self-hosted home server with SmartShield, VPN, and app store
Authentication · Security
The only WireGuard® VPN with true protocol-level MFA and enterprise-grade access control
Security · Authentication
Zero-trust access platform built on WireGuard®
Authentication · Security
Open source alternative to Auth0, Clerk & WorkOS — passwordless, passkeys, SSO
Authentication
Open-source auth infrastructure for SaaS and AI apps with OIDC, SAML, and RBAC
Invoicing Finance · Databases · Authentication
Self-hostable personal finance app built with Ruby on Rails and Hotwire
Developer Tools · Automation · Authentication
Build product integrations with AI using 700+ APIs
Authentication
Headless, cloud-native identity and user management for modern apps
Devops · Security · Authentication
Open source secrets management for dev teams — from dev to production
Databases · Ecommerce · Authentication
Open Source Realtime Backend in 1 File
Security · Authentication
Privacy-first, self-hostable Proof-of-Work CAPTCHA for GDPR compliance
Devops · Authentication
Open source Firebase alternative with realtime APIs on Kubernetes
Developer Tools · Authentication
Open-source Auth0/Clerk alternative with RBAC, teams, and passkeys
Developer Tools · Databases · Authentication
The open-source Firebase alternative built on Postgres
Authentication · Security
Open-source Auth0 alternative with full data control and passwordless login
Password Manager · Authentication · Security
Self-hosted Bitwarden-compatible password manager in Rust
Authentication · Security
Self-hosted SSO with OIDC, passkeys, and proxy auth for your apps
Authentication
Open-source, API-first identity platform with multi-tenancy, Passkeys & SSO
Authentication is the cornerstone of modern application security. It’s the process of confirming that a user is who they say they are before granting access to resources. Without robust authentication, applications are vulnerable to unauthorized access, data breaches, and a host of other security risks. This category encompasses a wide range of solutions designed to manage user identities, enforce access controls, and protect sensitive information. Crucially, it’s often paired with authorization (determining what a user can access) for complete security.
Types of apps within the Authentication category include password managers, multi-factor authentication (MFA) providers, social login services (allowing users to sign in with Google or Facebook accounts), passwordless authentication solutions (using biometrics, magic links, or WebAuthn), and comprehensive Identity Access Management (IAM) platforms. Single Sign-On (SSO) solutions also fall under this umbrella, streamlining user access across multiple applications.
Authentication matters because it directly impacts the security and usability of your applications. Common use cases include protecting user accounts in web and mobile apps, securing API access, verifying employee identities for internal systems (enterprise authentication), and complying with data privacy regulations (like GDPR or HIPAA). Implementing strong authentication protocols reduces the risk of account takeovers, data breaches, and fraud. Beyond security, a seamless authentication experience improves user satisfaction – nobody wants to remember dozens of complex passwords! Modern authentication solutions prioritize usability through features like MFA, passwordless login, and SSO.