Authgear is an open-source customer identity platform for SaaS and mobile teams that want to outsource login, registration, multi-factor authentication, and social and enterprise single sign-on. Developers integrate with hosted login pages themed in standard CSS, enforce specific login methods through code-configured Authflows, and manage users from an Admin Portal or directly in Postgres, while companies that need control can run it in their own cloud or VPC.[1][2]
Quick verdict
Open-source auth with passkeys, SSO, and a 100k-MAU free tier Authgear is an open-source customer identity platform that gives SaaS and mobile teams login, single sign-on, and user management without building auth in-house. Its cloud free tier covers up to 100,000 monthly active users, while Standard and Enterprise plans add SSO, audit logs, SLAs, and regional data residency on usage-based pricing.[1][2][3]
Authentication capabilities
Passkeys, magic links, and email, SMS, and WhatsApp one-time codes Passwordless sign-up and sign-in work through passkeys, magic links, and one-time codes delivered by email, SMS, or WhatsApp, alongside TOTP authenticator apps, so teams can drop passwords without losing account-recovery paths.[1]
Enforceable MFA policies, including fully passwordless setups Predefined multi-factor policies let teams require a second factor or go fully passwordless, with per-user MFA enforcement, recovery codes, and a settings page where users manage their own authenticators.[1]
Enterprise SSO over OIDC and SAML plus major social providers Single sign-on covers OpenID Connect and SAML enterprise connections as well as Google, Apple, Facebook, GitHub, LinkedIn, and Azure AD social login, with SSO itself gated to the paid Standard and Enterprise tiers.[1][2]
Login pages themed with standard CSS and shaped by Authflows The hosted login experience is customized with ordinary CSS theming, and Authflows let developers write login, signup, and account settings as explicit code-configured flows that force particular authentication methods.[1]
Admin Portal, audit log, and direct Postgres access for user data Operators manage users, inspect events, and search accounts from the Admin Portal with an audit log of user actions, while user data stays accessible directly in Postgres and through APIs; audit logs require a paid plan.[1][2]
SDKs for iOS, Android, React Native, Flutter, JavaScript, and .NET First-party SDKs cover iOS, Android, React Native, Flutter, JavaScript, and .NET, with demo applications and a getting-started flow that issues a client ID and endpoint for each app.[1]
Apache-2.0 open-source server backed by a public repository The server is developed in the public authgear/authgear-server repository under Apache-2.0, which lets teams audit the code they depend on and positions it as an open-source alternative to Auth0, Firebase Auth, and Keycloak.[1]
Regional data options with SOC 2 Type II and ISO 27001 compliance Paid plans offer SGP, EU, and US data regions with SOC 2 Type II and ISO 27001 compliance, GDPR and CCPA alignment, and custom data processing agreements on Enterprise.[1]
Who Authgear fits
SaaS teams that want login, MFA, and SSO handled outside their own codebase, starting on a free tier of up to 100,000 monthly active users.[1][2]
Consumer and mobile apps that want passwordless sign-in with passkeys, WhatsApp or SMS codes, and biometric-adjacent flows across iOS, Android, and the web.[1]
Companies that must keep identity data in a specific region or show SOC 2 and ISO 27001 credentials to their own customers.[1]
Limitations to weigh
Single sign-on, audit logs, custom SLAs, dedicated support, and custom data processing terms all require paid Standard or Enterprise plans, so the free tier suits only teams without enterprise buyer requirements.[1]
Paid pricing is usage-based across monthly active users, SMS consumption, and seats, which means costs move with growth and message volume rather than staying flat.[1]
Running the open-source server outside Authgear Cloud is self-hosting in the full sense: teams own deployment, Postgres operations, upgrades, and availability instead of delegating them to the managed service.[1][2]
How people experience it
One inspected G2 review excerpt about Authgear's support for login customizations.
1 cited community source. Community sample is a single G2 review excerpt; the full G2 review page could not be loaded on 2026-10-07 (repeated timeouts), so no broader sentiment, version context, or counterexamples could be inspected. No suitable original Reddit report was found within the research budget.
The one inspected user report centers on vendor support for login customizations, crediting the Authgear product team with making customized native-feeling login experiences achievable.[1]
With only a single review excerpt inspected and the full G2 page unreachable during research, this section records one data point rather than a balanced picture of user sentiment; treat it as anecdotal.[1]
Integration and compatibility
Applications connect through standard identity protocols and SDKs, with OIDC and SAML for enterprise connections and social login for Google, Apple, Facebook, GitHub, LinkedIn, and Azure AD.[1]
Webhooks, Custom JS, and Deno Deploy hooks for auth events Auth events can trigger webhooks and custom JavaScript, including blocking hooks that run on Deno Deploy, so teams can wire identity into their own onboarding, fraud, or provisioning logic.[1]
How people experience it
Exact excerpt
I love the support from the Authgear product team for customizations. Without their support, customization wouldn't be that easy.
G2 review snippet for Authgear praising vendor support for login customizations; the full review page could not be loaded on 2026-10-07, so this is quoted as an excerpt with a link to the complete source.
Questions worth asking
How much does Authgear cost per month?
The cloud free tier includes up to 100,000 monthly active users with MFA authenticator-app support. Standard and Enterprise plans are usage-based: they scale with monthly active users, SMS usage, and seat count, and are required for SSO, audit logs, SLAs, custom data processing terms, and regional data residency.[1]
Can Authgear be self-hosted instead of using Authgear Cloud?
Yes. The Authgear server is published as open source under Apache-2.0 in the authgear/authgear-server repository, and the company offers cloud, customer-VPC, and self-hosted options. Self-hosting is a real operations commitment, so teams should size it against the managed cloud free tier before choosing it.[1][2]
Is there a no-code way to add login with Authgear?
Authgear is a developer product: login flows are themed with standard CSS and customized through code-based Authflows, and integration uses SDKs and APIs. Non-technical teams that need a no-code membership or form builder will find it heavier than simpler tools, and should weigh the free-tier auth outsourcing against a lighter hosted login service.[1][2]
Which alternatives should teams compare against Authgear?
Teams that need a proprietary enterprise suite with bundled identity governance often evaluate Okta or Auth0, which the catalogue already lists as products Authgear is an alternative to. Teams that want a different open-source identity server commonly compare Keycloak, which Authgear's own repository positioning names alongside Auth0.[1][2]
Does Authgear meet compliance and data-residency needs?
Authgear documents SOC 2 Type II and ISO 27001 compliance plus GDPR and CCPA alignment, offers SGP, EU, and US data regions on paid plans, and supports custom data processing agreements on Enterprise. Regulated teams should still confirm their exact residency and audit needs against the current pricing page before committing.[1]
Sources and editorial review
Source research. Reviewed on October 7, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
One inspected G2 review excerpt about Authgear's support for login customizations. Community sample is a single G2 review excerpt; the full G2 review page could not be loaded on 2026-10-07 (repeated timeouts), so no broader sentiment, version context, or counterexamples could be inspected. No suitable original Reddit report was found within the research budget.
- Pricing - Authgear
official · Observed October 7, 2026
Official pricing page: free tier limits, Standard and Enterprise usage-based pricing, SSO and audit-log gating, data regions, compliance badges. Read 2026-10-07.
- Authgear Documentation
official · Observed October 7, 2026
Official documentation home: authentication methods, SSO, Authflows customization, SDKs, Admin Portal, audit log, hooks. Read 2026-10-07.
- authgear/authgear-server on GitHub
official · Observed October 7, 2026
Public server repository: open-source Auth0 and Keycloak alternative positioning, passkeys, SSO, MFA, self-hosted or cloud. Search result inspected 2026-10-07.
- Authgear Reviews on G2
community · Observed October 7, 2026
G2 review excerpt praising Authgear product-team support for login customizations; full review page timed out on repeated loads, so only the inspected excerpt is quoted.