# OATH (Open Authentication) vs RSA ID Plus: side-by-side comparison (2026) [OATH (Open Authentication)](https://cybersectools.com/tools/oath-open-authentication) is a free [MFA & passwordless](https://cybersectools.com/categories/user-authentication) solution by [OATH (Open Authentication)](https://cybersectools.com/companies/oath-open-authentication). [RSA ID Plus](https://cybersectools.com/tools/rsa-id-plus) is a commercial [MFA & passwordless](https://cybersectools.com/categories/user-authentication) solution by [RSA Security LLC](https://cybersectools.com/companies/rsa-security-llc). 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 | | OATH (Open Authentication) | RSA ID Plus | |---|---|---| | Pricing model | Free | Commercial | | Category | MFA & Passwordless | MFA & Passwordless | | Verified | No | No | | Deployment type | Hybrid | Hybrid | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | OATH (Open Authentication) | RSA Security LLC | | Headquarters | – | – | ### Use cases and capabilities | | OATH (Open Authentication) | RSA ID Plus | |---|---|---| | Authentication | Yes | Yes | | MFA | Yes | Yes | | Security Standards | Yes | – | | Open Source | Yes | – | | Security Framework | Yes | – | | Single Sign On | – | Yes | ### Core features **OATH (Open Authentication)** 9 features listed. Sign in on the page to see them. **RSA ID Plus** 10 features listed. Sign in on the page to see them. ### Integrations **OATH (Open Authentication)** No integrations listed. **RSA ID Plus** 11 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [OATH (Open Authentication)](https://cybersectools.com/tools/oath-open-authentication) fits if you are a startup and you need a free product. ## OATH (Open Authentication) vs RSA ID Plus FAQ Common questions when comparing OATH (Open Authentication) vs RSA ID Plus for MFA & passwordless. ### What is the difference between OATH (Open Authentication) and RSA ID Plus? **OATH (Open Authentication)**: Vendor-neutral org publishing open standards for OTP & strong auth. Built by OATH (Open Authentication). **RSA ID Plus**: IAM platform with MFA, SSO, and adaptive access for cloud, hybrid, on-prem. Built by RSA Security LLC. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes OATH (Open Authentication) and RSA ID Plus? **OATH (Open Authentication)** is made by OATH (Open Authentication). **RSA ID Plus** is made by RSA Security LLC. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is OATH (Open Authentication) a good alternative to RSA ID Plus? Often, yes. OATH (Open Authentication) and RSA ID Plus are both MFA & Passwordless products, and both cover Authentication, MFA. Key differences: OATH (Open Authentication) is Free while RSA ID Plus is Commercial. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [OATH (Open Authentication) vs Array IDpass Identity Solution](https://cybersectools.com/compare/array-idpass-identity-solution-vs-oath-open-authentication) - [OATH (Open Authentication) vs Auth0 Passwordless Authentication](https://cybersectools.com/compare/auth0-passwordless-authentication-vs-oath-open-authentication) - [OATH (Open Authentication) vs HYPR Authenticate](https://cybersectools.com/compare/hypr-hypr-authenticate-vs-oath-open-authentication) - [RSA ID Plus vs Array IDpass Identity Solution](https://cybersectools.com/compare/array-idpass-identity-solution-vs-rsa-id-plus) - [RSA ID Plus vs Auth0 Passwordless Authentication](https://cybersectools.com/compare/auth0-passwordless-authentication-vs-rsa-id-plus) - [RSA ID Plus vs HYPR Authenticate](https://cybersectools.com/compare/hypr-hypr-authenticate-vs-rsa-id-plus) ## Alternatives to each - [See all OATH (Open Authentication) alternatives](https://cybersectools.com/alternatives/oath-open-authentication) - [See all RSA ID Plus alternatives](https://cybersectools.com/alternatives/rsa-id-plus) --- Source: https://cybersectools.com/compare/oath-open-authentication-vs-rsa-id-plus For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/oath-open-authentication.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on OATH (Open Authentication) and RSA ID Plus: 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