#1MFA, SSO, passwordless, biometric, and identity provider tools.
Kitploit recommended

The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.
Step-by-step guide for hardening a Linux server, covering SSH security, firewalls, intrusion detection, auditing, and system configuration to reduce…

Open Source Identity and Access Management For Modern Applications and Services

CLI framework for deploying and managing serverless applications on AWS Lambda with YAML infrastructure, local development, and multi-language…

A tool for secrets management, encryption as a service, and privileged access management

Curated macOS security and privacy guide with practical instructions for threat modeling, disk encryption, firewall configuration, secure…

The easiest, most secure way to use WireGuard and 2FA.

General purpose TLS and crypto library

Secure offline storage of credentials with encrypted vaults, password generator, TOTP, YubiKey/OnlyKey support, browser integration, and CLI.

The most comprehensive authentication framework

The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

Provides open-source SSO and identity provider functionality with SAML, OAuth2/OIDC, LDAP, and RADIUS support for centralized authentication,…

Python library for low-level network protocol manipulation, featuring SMB, MSRPC, Kerberos, and WMI implementations with tools for authentication…

Self-hosted WAF and reverse proxy that filters malicious HTTP traffic, blocks SQL injection, XSS, and bot attacks, with rate limiting and dynamic…

Authorization library enforcing ACL, RBAC, ABAC, and custom access-control models with RESTful matching and policy management APIs for applications…

A little tool to play with Windows security

Bitwarden client apps (web, browser extension, desktop, and cli).

A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.