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User authentication is a security measure to provide rightful access to your digital properties like your website or utility.

authsignal

User authentication software verifies the identity of users attempting to access digital resources and ensures data security.

But its quite the opposite if:

So, dont make pizza if you arent Dominos.

Chances are youll spoil it.

stytch dashboard

While an average business person will straightaway run towardsAuth0orFirebase, there are others as well.

Lets look at some of the best user authentication platforms apart from Auth0 and Firebase.

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Ory dashboard

Authsignal

Delivering fine-tuned consumer passwordless authentication experiences has never been easier than with Authsignal.

Authsignal works with your existing identity stack and requires no migration.

Integration and configuration time is minimized via their flexible API.

supabase user accounts dashboard

Drop in Passwordless Authentication challenges anywhere in the customer journey.

Gain a complete Audit trail of actions.

Authsignal integrates with:

2.

Okta dashboard

Stytch

Stytch is a staunch supporter of password-less authentication.

It is focused on improving user experience and cutting developer headaches by doing just that.

Password-less authentication is very similar to using Slack.

pingidentity

They allow for 3rd-party logins or send an email link for authentication, but never use passwords.

Stytch calls them magic links.

Stytch has flexible pricing that adjusts as per your active user base.

frontegg dashboard

And there is a free USD 100 worth of credits as the welcome package.

Ory

Ory brings complete user experience control with its headless user authentication management.

There is a free tier and a cloud one if you intend to use a custom domain.

authress dashboard

Besides, Ory lets you create custom identity schemas to build personalized user authentication/registration forms.

It also supports building single-page applications using React, Next.js, Gatsby, and AngularJS.

With Ory, developers can test and validate the system without needing to code.

Auth0 dashboard

Ory presents itself as a complete authentication and authorization platform with identity & permission management.

It is a zero-trust online grid that is compatible with OAuth2 and OpenID Connect.

Ory also comes with FIDO 2 compatible two-factor authentication (2FA) and a command-line developer-friendly interface.

Firebase Sample Authentication app

Finally, you’re able to start with a free-forever plan and upgrade if need be.

Supabase

Supabasecalls itself an open-source Firebase alternative.

Similar to STYTCH, Supabase has multiple ways to take in your users.

onelogin dashboard

you could use the conventional email & password, magic links, social, or phone logins.

In addition, you’re free to integrate 3rd-party authentication protocols like OAuth with a few clicks.

Powered with react libraries, you’re free to quickly start with Supabases pre-build auth widgets.

Supabase also has user management and authorization mechanisms to implement granular access rules.

And ultimately, Supabase has a free, paid, and pay-as-you-go subscription plan matching all possible use cases.

Okta

Okta is again a flagbearer of password-less security.

However, you might ask for the strongest passwords with Okta as well.

In addition to tweaking password requirements, you’re free to also enable multifactor authentication (MFA).

Besides, you get a real-time Syslog with advanced searches to identify issues for instant troubleshooting.

Okta gives importance to progressive profiling, which means minimum upfront information at registrations.

The aim is to minimize user inconvenience, boost registrations, and gradually complete the user profile.

Okta allows for excellent API security by integrating identity protocols like OAuth.

And you will have a single point for all API authorization policies to integrate security and development.

PingIdentity

PingIdentity is shaped as an intelligent central authentication module for all your cloud, in-house, andSaaSimplementations.

This lets you deploy adaptive authentication based on user behavior and risk assessment.

you’re able to create multiple environments for your customers or for your internal employees.

This also has support for MFA and diverse authentication rules.

In addition, PingIdentity permits for IdP- and SP-initiated SSO.

Besides, you’re able to enable SSO for APIs, Mobiles & SaaS applications.

Keycloak

Keycloak is an open-source user identity and access management platform.

you’re free to integrate Keycloak with your applications to have a single-sign-in and single-sign-out experience.

Moreover, one can activate social logins without any modification in code.

Its account management console lets users manage their profile, update passwords, set2FA, etc.

you could deploy its SSO to integrate enterprise IDPs via SAML & OpenID connect.

Frontegg also comes equipped with social logins and multi-factor authentication.

In addition, it supports advanced features like Google Captcha and password-less authentication with magic links.

Besides, users can manage their own teams by creating profiles and permissions.

The user profile also has audit logs for the customers to check and control their login activities.

In addition, it’s possible for you to apply Frontegg for machine-to-machine authorization.

And finally, there is a facility to enable custom domains for cross-site authentication.

Frontegg has an impressive forever-free plan.

However, some advanced features are reserved for paid customers.

Authress

With its long list of features, Authress is a brilliant user authentication and a Firebase alternative.

Authress bets heavily on its authorization API and integration with your existing identity solutions.

you might define granular access controls and group them accordingly by user roles.

In addition, Authress also has machine-to-machine authentication and unlimited enterprise integrations.

Similarly, you’re free to use SSO and any number of social logins for your app authentication.

It gives you comprehensive usage logs and unlimited users with import/export support.

it’s possible for you to also use your branding with a custom domain.

While there is no free-forever subscription, your first 1000 API calls are free with standard and enterprise plans.

Auth0

Auth0 is the go-to user authentication platform and a Firebase alternative for good reasons.

It features a universal login for all your applications to add user convenience.

This is like having SSO between multiple apps.

There is a central feature control dashboard for social logins, problem detections, and MFA.

One can also use custom domains for seamless branding.

During the sign-up process, Auth0 actually checks whether you are a coder or not.

Moreover, there are password-less magic links for an even better user experience.

Auth0 has flexible subscriptions for many use cases, including a free tier.

Firebase

Firebase is Googles range of products, including the user authentication platform.

you might use Firebase authentication via passwords, phone numbers, or social logins.

They have pre-built templates and SDKs to get started without much effort.

Firebase also supports Gemini AI to help you build your authentication apps.

Amazon Cognito

Cognito is Amazons cloud software authentication solution for the masses.

It comes with a flexible UI that can be changed as per the use case.

This also has advanced user authentication features like risk-based adaptive mode.

OneLogin

OneLoginby OneIdentity is yet another Firebase alternative with noteworthy advanced features.

it’s possible for you to also utilize OneLogins simple APIs for a personalized user experience.

One can also deploy their smart factor authentication for authorizing users via SMS codes or automated phone calls.

Finally, you could begin with OneLogin with a free trial to get a taste of their service.

Final words

3rd-party user authentication platforms are a no-brainer for startup and mid-level organizations.

Building and applying your in-house solutions simply arent worth the efforts and risk.

Even for the premium companies, its best to give the task to the experts rather than mishandling it.

While choosing any plan, attempt to steer away from any vendor locks.

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