# Privakey SSO & IdS vs Rublon Authenticator: side-by-side comparison (2026)

[Privakey SSO & IdS](https://cybersectools.com/tools/privakey-sso-and-ids) is a commercial [MFA & passwordless](https://cybersectools.com/categories/user-authentication) solution by [Privakey](https://cybersectools.com/companies/privakey). [Rublon Authenticator](https://cybersectools.com/tools/rublon-authenticator) is a free [MFA & passwordless](https://cybersectools.com/categories/user-authentication) solution by [Rublon](https://cybersectools.com/companies/rublon). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best MFA and Passwordless Solutions for Business](https://cybersectools.com/shortlists/best-mfa-passwordless-solutions) picks Okta Adaptive MFA, Cisco Duo Passwordless, Beyond Identity Phishing-Resistant MFA and 4 more.

## Side-by-side comparison

| | Privakey SSO & IdS | Rublon Authenticator |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | MFA & Passwordless | MFA & Passwordless |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Privakey | Rublon |
| Headquarters | – | – |

### Use cases and capabilities

| | Privakey SSO & IdS | Rublon Authenticator |
|---|---|---|
| SSO | Yes | Yes |
| MFA | Yes | Yes |
| Authentication | Yes | Yes |
| Single Sign On | Yes | – |
| Passwords | Yes | – |
| Zero Trust Architecture | Yes | – |
| ZTNA | Yes | – |

### Core features

**Privakey SSO & IdS**

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

**Rublon Authenticator**

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

### Integrations

**Privakey SSO & IdS**

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

**Rublon Authenticator**

No integrations listed.

## Which one fits you

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

- [Rublon Authenticator](https://cybersectools.com/tools/rublon-authenticator) fits if you are a startup and you need a free product.

## Privakey SSO & IdS vs Rublon Authenticator FAQ

Common questions when comparing Privakey SSO & IdS vs Rublon Authenticator for MFA & passwordless.

### What is the difference between Privakey SSO & IdS and Rublon Authenticator?

**Privakey SSO & IdS**: Passwordless SSO and CIAM suite using biometrics and asymmetric crypto. Built by Privakey.

**Rublon Authenticator**: Free mobile app for MFA via push notifications, TOTP, and QR codes. Built by Rublon.

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

### Who makes Privakey SSO & IdS and Rublon Authenticator?

**Privakey SSO & IdS** is made by Privakey. **Rublon Authenticator** is made by Rublon. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Privakey SSO & IdS a good alternative to Rublon Authenticator?

Often, yes. Privakey SSO & IdS and Rublon Authenticator are both MFA & Passwordless products, and both cover MFA, Authentication, SSO. Key differences: Privakey SSO & IdS is Commercial while Rublon Authenticator is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Privakey SSO & IdS vs Cyphercor MFA Solutions](https://cybersectools.com/compare/cyphercor-mfa-solutions-vs-privakey-sso-and-ids)
- [Privakey SSO & IdS vs Gradient for Users](https://cybersectools.com/compare/gradient-for-users-vs-privakey-sso-and-ids)
- [Privakey SSO & IdS vs Circle Security Circle Access](https://cybersectools.com/compare/circle-security-circle-access-vs-privakey-sso-and-ids)
- [Rublon Authenticator vs Cyphercor MFA Solutions](https://cybersectools.com/compare/cyphercor-mfa-solutions-vs-rublon-authenticator)
- [Rublon Authenticator vs Gradient for Users](https://cybersectools.com/compare/gradient-for-users-vs-rublon-authenticator)
- [Rublon Authenticator vs Circle Security Circle Access](https://cybersectools.com/compare/circle-security-circle-access-vs-rublon-authenticator)

## Alternatives to each

- [See all Privakey SSO & IdS alternatives](https://cybersectools.com/alternatives/privakey-sso-and-ids)
- [See all Rublon Authenticator alternatives](https://cybersectools.com/alternatives/rublon-authenticator)

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Source: https://cybersectools.com/compare/privakey-sso-and-ids-vs-rublon-authenticator

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

More on Privakey SSO & IdS and Rublon Authenticator: 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