# Curity Identity Server vs FusionAuth: side-by-side comparison (2026)

[Curity Identity Server](https://cybersectools.com/tools/curity-identity-server) is a commercial [access management](https://cybersectools.com/categories/access-management) solution by [Curity](https://cybersectools.com/companies/curity). [FusionAuth](https://cybersectools.com/tools/fusionauth-security) is a commercial [CIAM](https://cybersectools.com/categories/ciam) solution by [FusionAuth](https://cybersectools.com/companies/fusionauth). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Access Management Solutions for Business](https://cybersectools.com/shortlists/best-access-management-solutions) picks Microsoft Entra ID, Okta Single Sign-On, Ping Identity Platform and 4 more.

## Side-by-side comparison

| | Curity Identity Server | FusionAuth |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Access Management | CIAM |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Curity | FusionAuth |
| Headquarters | – | – |

### Use cases and capabilities

| | Curity Identity Server | FusionAuth |
|---|---|---|
| Authentication | Yes | Yes |
| Authorization | Yes | Yes |
| SSO | Yes | Yes |
| MFA | Yes | Yes |
| JWT Security | Yes | – |
| Zero Trust Architecture | Yes | – |
| Password Management | – | Yes |
| Data Breach | – | Yes |
| Agentic AI Security | – | Yes |

### Core features

**Curity Identity Server**

No features listed.

**FusionAuth**

10 features listed. Sign in on the page to see them.

### Integrations

**Curity Identity Server**

10 integrations listed. Sign in on the page to see them.

**FusionAuth**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [FusionAuth](https://cybersectools.com/tools/fusionauth-security) fits if you are a startup.

## Curity Identity Server vs FusionAuth FAQ

Common questions when comparing Curity Identity Server vs FusionAuth for access management.

### What is the difference between Curity Identity Server and FusionAuth?

**Curity Identity Server**: Identity server platform for managing authentication and access decisions. Built by Curity.

**FusionAuth**: AuthN, AuthZ, and identity management you can deploy anywhere and control end to end. Built by FusionAuth.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Curity Identity Server and FusionAuth?

**Curity Identity Server** is made by Curity. **FusionAuth** is made by FusionAuth. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Curity Identity Server a good alternative to FusionAuth?

In part. Curity Identity Server and FusionAuth are not in the same category on CybersecTools. Both cover Authentication, Authorization, MFA. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Curity Identity Server vs SecureAuth](https://cybersectools.com/compare/curity-identity-server-vs-secureauth)
- [Curity Identity Server vs F5 BIG-IP Zero Trust Access](https://cybersectools.com/compare/curity-identity-server-vs-f5-big-ip-access-policy-manager-apm)
- [Curity Identity Server vs ID Agent Passly](https://cybersectools.com/compare/curity-identity-server-vs-id-agent-passly)
- [FusionAuth vs SecureAuth](https://cybersectools.com/compare/fusionauth-security-vs-secureauth)
- [FusionAuth vs F5 BIG-IP Zero Trust Access](https://cybersectools.com/compare/f5-big-ip-access-policy-manager-apm-vs-fusionauth-security)
- [FusionAuth vs ID Agent Passly](https://cybersectools.com/compare/fusionauth-security-vs-id-agent-passly)

## Alternatives to each

- [See all Curity Identity Server alternatives](https://cybersectools.com/alternatives/curity-identity-server)
- [See all FusionAuth alternatives](https://cybersectools.com/alternatives/fusionauth-security)

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Source: https://cybersectools.com/compare/curity-identity-server-vs-fusionauth-security

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/curity-identity-server.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Curity Identity Server and FusionAuth: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md