# Firebase Authentication vs FusionAuth

| Attribute | Firebase Authentication | FusionAuth |
|---|---|---|
| **Vioscale score** | 65.5 (26% (low)) | 52.5 (72% (medium)) |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"air_gapped":true,"self_hosted":true}` |
| description.long | A backend authentication service offering SDKs and UI components to integrate user sign-in across web and mobile platforms. Supports email, password, phone, and social login methods, with customizable UI options and pre-built components. | FusionAuth is an identity and access management solution providing comprehensive authentication capabilities including social login, passwordless authentication, multi-factor authentication, and single sign-on. It supports self-hosted, cloud, and hybrid deployment models with transparent, predictable pricing and full API-first integration. |
| features.capabilities | `{"oidc":true,"hosting":"cloud","saml_sso":true,"hosted_ui":"both","open_source":false,"passwordless":true,"social_login":true}` | `{"mfa":true,"oidc":true,"rbac":true,"hosting":"both","saml_sso":true,"hosted_ui":"both","open_source":true,"passwordless":true,"social_login":true,"b2b_multi_tenant":true,"passkeys_webauthn":true,"scim_provisioning":true}` |
| integrations.count | - | 7 |
| integrations.list | - | `[{"name":"Google"},{"name":"Facebook"},{"name":"LDAP"},{"name":"Legacy database systems"},{"name":"Kafka"},{"name":"Custom APIs"},{"name":"Webhooks"}]` |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"US","primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"ios":true,"mac":true,"web":true,"android":true}` | `{"cli":true,"web":true,"linux":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Spark","description":"Free tier with usage limits","contactSales":false,"includedLimits":{"saml_oidc_users":"50","monthly_active_users":"50K"}},{"free":false,"name":"Blaze","description":"Pay-as-you-go with Spark free tier limits included, then usage-based billing","contactSales":false,"includedLimits":{"saml_oidc_users":"50","monthly_active_users":"50K"}}],"summary":"Free Spark plan with 50K monthly active users. Blaze plan uses pay-as-you-go pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://firebase.google.com/pricing","retrievedAt":"2026-08-14T15:28:10.980Z","billingPeriods":["month"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Community","summary":"Free, self-hosted","features":["Core authentication standards and features","Community support via forums, Slack, and GitHub","Self-hosted deployment"],"description":"Free, unlimited self-hosted edition with core authentication features","contactSales":false},{"free":false,"name":"Starter","summary":"$162/mo when billed annually","features":["Premium authentication features","Advanced MFA methods","Application theming","Breached password detection","Machine-to-machine authentication","Basic hosting included"],"commitment":"annual","components":[{"kind":"fixed","amount":162,"period":"month","currency":"USD"}],"description":"Premium authentication features with advanced MFA, application customization, and basic hosting","contactSales":false},{"free":false,"name":"Essentials","summary":"Starting at $2,970/mo billed annually","features":["Advanced connectivity, MFA, and security features","Custom OAuth scopes","Email support with 24-48 hour response during business hours","Business hosting included"],"commitment":"annual","components":[{"kind":"fixed","amount":2970,"period":"month","currency":"USD"}],"description":"Advanced security and connectivity features for business applications with email support and business hosting","contactSales":false},{"free":false,"name":"Enterprise","summary":"Starting at $2,970/mo billed annually","features":["All Essentials features","Advanced threat detection","SSO tenant manager","24/7 phone and email support","Private Slack channel with contract","Solution architect guidance","High-availability hosting"],"commitment":"annual","components":[{"kind":"fixed","amount":2970,"period":"month","currency":"USD"}],"description":"Critical application support with advanced threat detection, 24/7 engineering support, and dedicated infrastructure","contactSales":true}],"summary":"Free self-hosted Community edition. Paid cloud plans from $162/mo for Starter.","currency":"USD","freeTier":true,"sourceUrl":"https://fusionauth.io/pricing","retrievedAt":"2026-08-14T08:36:23.179Z","startingPrice":{"amount":162,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | high |
| pricing.transparent | yes | yes |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | yes | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |

## Capabilities (Auth & Identity Software)

| Capability | Firebase Authentication | FusionAuth |
|---|:--:|:--:|
| **Deployment** |  |  |
| Hosting | Cloud only | Cloud + self-hosted |
| **Methods** |  |  |
| Social login | ✓ | ✓ |
| Passwordless | ✓ | ✓ |
| Passkeys / WebAuthn | - | ✓ |
| Multi-factor auth | - | ✓ |
| **Enterprise** |  |  |
| SAML SSO | ✓ | ✓ |
| SCIM provisioning | - | ✓ |
| B2B / multi-tenancy | - | ✓ |
| **Standards** |  |  |
| OpenID Connect provider | ✓ | ✓ |
| **Delivery** |  |  |
| Hosted UI | Both | Both |
| **Access** |  |  |
| RBAC | - | ✓ |
| **Licensing** |  |  |
| Self-hostable OSS core | ✗ | ✓ |

*Source: Vioscale. Generated 2026-09-01T16:38:50.837Z. "-" = undocumented, not absent.*