FusionAuth Alternatives (September 2025)

Secure and scale your product with Stytch's identity platform. From authentication to fraud protection, we have the APIs and SDKs for your use case.

No code user authentication platform for React, Node, Python, Go and Webflow powered websites, with one-click passwordless logins and expert setup help.

We're bringing the convenience and security of Auth0 by Okta to eligible startup customers so you can get your apps up and running quickly and keep customer data secure.

Developer APIs / SDKs for enterprise-ready features like Single Sign-On (SSO/SAML), Passwordless Authentication, Directory Sync (SCIM), Audit Trail (SIEM), and more. Get started for free.

Frontegg is an end-to-end user management platform for B2B SaaS, powering strategies from PLG to enterprise readiness. Easy migration, no credit card required.

Create and customize user journeys for any app – from authentication and authorization to MFA and federation. Get set up in minutes with our no-code CIAM platform.

Powerful user authentication that integrates in minutes. Free up to 10,500 MAU.

Quickly integrate passwordless authentication for web and mobile applications to give users a smooth, secure login experience.

Onboard companies of any size in just a few lines of code.

With cidaas you create one identity across all channels for convenient & secure authentication ►SSO ►2FA ►Social Login ►Identity & access management

LoginRadius is a customer identity solution that manages user authentication, identity verification, social login, SSO, login security & more.

Convert more B2B customers with our authentication SSO solution. A few lines of code to be SSO-ready, and you can start working with enterprise customers

Zuplo is the API management platform for developers. Build, deploy, and scale APIs faster with Zuplo.

Provides secure access to any cloud,web and legacy app with our strong authentication methods and single sign on to any enterprise application with miniOrange Single Sign On Service.

With SecureAuth Arculix, every digital journey is simple, seamless, and secure to support your cyber insurance and ZTA initiatives.

The only secure-by-design Secure Access Platform. Eliminates access risks with SSO, Zero-Trust Identity architecture, phish-resistant MFA, Device Trust and Passwordless capabilities. The secure alternative to Okta, Microsoft Entra, Google MFA, and more.

JumpCloud makes it simple to manage Windows, Apple, Linux, and Android devices and to deliver secure access with SSO, MFA, Zero Trust, RADIUS, and more.

The home of the company that made phish-proof MFA 'a thing'. Not only phish resistant but demonstrably phish-proof. No second device. Deploy in 15 mins!

World-Class PKI Services, #1 Rated Onboarding Software & RADIUS Services to provide the next-generation of passwordless security.

Strong authentication, without the passwords.

Implement fine-grained authorization where you need to. Styra allows you to define, enforce and manage policy as code across your cloud-native infrastructure and applications. From the creators of Open Policy Agent. Decouple policy using OPA and manage it with Styra to free up developers so they can work on more important things. Authorization is needed beyond the entry point authentication provides. %

Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.

EmpowerID is the award winning, all-in-one Identity Management and Cloud Security suite. We provide a highly scalable, fully customizable IAM infrastructure that delivers results in a more time and cost-efficient manner for your enterprise. EmpowerID has achieved a Leader position in the KuppingerCole Leadership Compass as Overall Leadership, also is a Product leader, Innovation Leader, and Overall Leader

JumpCloud's revolutionary directory unifies device and identity on Windows, Mac, and Linux with cloud based SSO, MDM, MFA, PAM, and more.

UserLock protects AD identities with 2FA, SSO and real-time access management to enable secure access to the network and cloud applications, from anywhere.

Keycloak is an open source identity and access management solution

PingAccess allows organizations to protect and centrally manage access to web apps, APIs, and other resources.

For strong authentication, you need a strong identity. Upgrade identity authentication & Go Passwordless with the 1Kosmos digital identity solution.

DevCycle is a Feature Flag Management platform built for modern development teams. Deploy faster, reduce risk, and build maintainable code at scale.

PingID provides multi-factor authentication that adds an extra layer of protection to all of your apps.

Zilla brings everything together in one unified identity security platform – even your apps with no security APIs. Book a demo today.

Kong is the most widely adopted API gateway and service mesh, powering the world’s APIs for modern architectures. Accelerate development and productivity today!

Get the most powerful and easy-to-configure continuous integration and delivery platform.

Portainer is your container management software to deploy, troubleshoot, and secure applications across cloud, datacenter, and Industrial IoT use cases.

Platform teams need control. Dev teams need autonomy. Uffizzi provides a multi-tenant, Kubernetes-native foundation that accomplishes both.

Secure your workforce, customers, and partner data with our modern IAM platform at a price that works with your budget.

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

Access Policy Manager provides access policy enforcement to secure access to your apps, providing trusted access to users from anywhere, on any device.

Build a seamless and secure digital experience for your customer using Okta’s customer identity and access management (CIAM) solution.

The State of Passkey Authentication Live Webinar: Wednesday, June 19 at 2pm ET / 11am PT Register for the webinar PortalGuard IDaaS: Flexible, powerful identity security for employees & customers. Free Trial Contact Us Identity-Bound Biometrics are a great investment. Invest in BIO-key Give us a hand. Try a different way to authenticate with MobileAuth™. Learn

SashiDo.io is a serverless API development platform with scalable json rest and graphql apis, headless cms, built with nodejs, mongodb, parse server, kubernetes and docker.

A powerful CMS, BaaS, and more. Power any project with Directus – a composable data platform to easily create and deploy data-rich apps.

Advance your team's identity management with Crowd. Sign sign-on and centralized identity management to create a seamless login experience.

Nevatech Sentinet offers a flexible, lightweight and scalable API Management platform to help businesses maximize the value of their data. Try Nevatech Now!

Optimal IdM is an global provider of Identity and Access Management (IAM) Solutions and Services. View our award-winning suite of IAM products today.

Cloud RADIUS & Cloud LDAP Authentication Servers. LDAP, RADIUS, and SSH Key Management: Simple yet advanced access control for your G Suite or O365.

HYPR's identity security solution empowers you to continuously detect, prevent, and eliminate identity-related risks for your workforce and customers.

Flagsmith makes it easy to create and manage features flags. Use our hosted API, deploy to your own private cloud, or run on-premises.

Protect privileged accounts with Delinea Secret Server. Easy-to-use, full-featured privileged access management. Cloud and on-premises.

Start your Free Trial today. Secure access to networks, servers, VPNs, and applications using Two-Factor Authentication (MFA/2FA).

Easily generate license keys and validate them in your software apps. Additionally, you can offer trials, subscriptions, node-locked licenses, floating licenses, offline licenses and much more.

ADSelfService Plus is an identity security solution that helps your organization achieve Zero Trust with adaptive multi-factor authentication, enterprise single sign-on, and self-service password management capabilities.

An open source Kubernetes Platform to manage enterprise-grade Kubernetes across hybrid cloud, multi-cloud and edge. Get started for free!

Empower your workforce with SDO's Authentication Platform for the ultimate Passwordless MFA experience. Detect, prevent, and secure access with ease!

Ping Identity helps you protect your users and every digital interaction they have while making experiences frictionless.

Free SSH key manager that helps you manage access and authorization across your instances and servers across your multi-cloud infrastructure.

Enter the website URL to Know your Security Score!

Securely manage your access and permissions to SQL, NoSQL, and Cloud databases with DBHawk, the all-in-one data platform by Datasparc.

Ping Identity helps you protect your users and every digital interaction they have while making experiences frictionless.

The #1 Vault Alternative secures credentials, certificates and keys securely and with ease across multi-cloud environments.

Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

Gravio is a platform that connects IoT devices. It is built for companies who like to start small and quickly, and yet have the possibility to scale up robustly and fast. Other than most IoT platforms, Gravio leverages the power of Edge Computing and Artificial Intelligence.

Build native integrations fast with Truto. Integration is a solved problem. Why have your best engineers work on integrations when they can focus on architecture, design, and product?

Appwrite is an open-source platform for building applications at any scale, using your preferred programming languages and tools.

Argonaut automates deployments of infrastructure and applications to your cloud account. Autogenerate and collaborate with your team on Terraform, CI/CD and App Deployment Configs in an instant.

ClassLink is a provider of identity and access management products offering instant access to apps and files with SSO, class rostering, account provisioning, and analytics.

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

Bunnyshell is an Environment as a Service platform that enables developers to instantly spin up dev environments for any task on Kubernetes and develop remotely.

PingFederate is an authentication authority that provides federated SSO capabilities for any identity and to any resource.

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

Devtron enables swift app containerization, seamless Kubernetes deployment, and peak performance optimization – simplify your app management today!

Full dev-to-prod cloud native security platform on Kubernetes, Docker, OpenShift, Fargate, Lambda, AWS & other container platforms

Boost Your Mobile DevOps with AI-Powered Appcircle. Explore Now!

Implement and enforce best practices in authentication, authorization, validation and sanitization of modern API requests and responses. Plus, centralized API audit trails and ensure governance and compliance.

Get 10 free parallel jobs for cloud-based CI/CD pipelines for Linux, macOS, and Windows. Automate builds and easily deploy to any cloud with Azure Pipelines.

Secure Self Service Password Reset Software Best Self Service Password Reset Tool at a low cost per user Combines SSPR with user verification at the help desk and advanced MFA. The dilemma for high security organizations: How to

Freshdchat API

From signing to filing, it's never been easier or more affordable to engage customers with API toolkits from the leader in online legal services.

Azure API Management offers a scalable, multi-cloud API management platform for securing, publishing, and analyzing APIs.

Cerby is an identity management platform simplifying how marketers, IT, and security teams securely access and manage their applications.

Securing Every Machine and Digital Transaction with a Trusted Identity

Open source vulnerability management made simple. Debricked helps you stay on top of security while maintaining your development speed.

PassCamp is an intergrated password vault technology solution perfected to protect and control passwords in your organization. Learn more.

Use Swan's APIs and ready-made white-label interfaces to embed banking features like accounts, cards, and payments into your workflows and UX.

Silverfort extends MFA to resources that couldn’t be protected before, automates the discovery and protection of service accounts and blocks ransomware spread in real time.

APIs Delivering Global Verification and Programmable Communications as a service. SMS, Voice, and phone number intelligence solutions. Get started now.

Identity Management

Open source desktop application that provides Kubernetes, Container Management, bundled utilities on the desktop

Use the industry's leading privileged access management solution to keep your organization's assets safe, detect threats, and stop attacks in real-time.

MicroK8s is the simplest production-grade conformant K8s. Lightweight and focused. Single command install on Linux, Windows and macOS. Made for devOps, great for edge, appliances and IoT. Full high availability Kubernetes with autonomous clusters and distributed storage.

Portnox delivers cloud-native network access control solutions purpose-built for organizations embracing zero trust security models.

Validate users across SMS and preferred channels at scale with the Twilio Verify API, a turnkey, passwordless authentication solution that enables seamless and secure user onboarding, reduces fraud, and optimizes delivery rates without the heavy lifting. Twilio handles all your connectivity, channels, OTP generation, and more—so you don’t have to.

Protectimus is a two-factor authentication (2FA) platform provided as a cloud MFA and on-premises, we offer multi-factor authentication based on OATH standards

Add identity and access management functionality to your app, protect user accounts, and scale with confidence using a cloud-based CIAM platform.

Passwork provides an advantage of effective teamwork with corporate passwords in a totally safe environment. Employees can quickly access all their passwords, while the rights and actions are closely supervised and managed by local system administrators.

Share code, track work, and ship software using integrated developer tools, hosted on-premises with Azure DevOps Server

ConfigCat is a feature flag service with unlimited team size, awesome support, and a reasonable price tag that takes 10 mins to learn.

Prophaze is a Web and API Security Platform for Layer 2-7 DDOS Protection for AWS, Azure, Google Cloud, Kubernetes . Cloud WAF

Create powerful beautiful documentation, hassle-free. DeveloperHub is hosted documentation portals service for Product and API Docs. Write your user guides, knowledge base, API and product documentation. Supports Swagger specification, search, collaboration, markdown, mobile devices and SEO. API Documentation as a service.