# Duo Single Sign-On (SSO) vs Messageware OWA Guard: side-by-side comparison (2026) [Duo Single Sign-On (SSO)](https://cybersectools.com/tools/duo-single-sign-on-sso) is a commercial [access management](https://cybersectools.com/categories/access-management) solution by [Duo Security](https://cybersectools.com/companies/duo-security). [Messageware OWA Guard](https://cybersectools.com/tools/messageware-owa-guard) is a commercial [access management](https://cybersectools.com/categories/access-management) solution by [Messageware](https://cybersectools.com/companies/messageware). 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 | | Duo Single Sign-On (SSO) | Messageware OWA Guard | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Access Management | Access Management | | Verified | No | No | | Deployment type | Hybrid | On-Premises | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Duo Security | Messageware | | Headquarters | – | – | ### Use cases and capabilities | | Duo Single Sign-On (SSO) | Messageware OWA Guard | |---|---|---| | Single Sign On | Yes | – | | SSO | Yes | – | | MFA | Yes | – | | Authentication | Yes | Yes | | Brute Force | – | Yes | | Alerting | – | Yes | | Microsoft | – | Yes | | Outlook | – | Yes | | Microsoft 365 | – | Yes | ### Core features **Duo Single Sign-On (SSO)** 10 features listed. Sign in on the page to see them. **Messageware OWA Guard** 7 features listed. Sign in on the page to see them. ### Integrations **Duo Single Sign-On (SSO)** No integrations listed. **Messageware OWA Guard** 3 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. - [Duo Single Sign-On (SSO)](https://cybersectools.com/tools/duo-single-sign-on-sso) fits if you need both cloud and on-premises options and you are a startup. - [Messageware OWA Guard](https://cybersectools.com/tools/messageware-owa-guard) fits if you need to run it on your own servers. ## Duo Single Sign-On (SSO) vs Messageware OWA Guard FAQ Common questions when comparing Duo Single Sign-On (SSO) vs Messageware OWA Guard for access management. ### What is the difference between Duo Single Sign-On (SSO) and Messageware OWA Guard? **Duo Single Sign-On (SSO)**: SSO solution with MFA integration for cloud and on-premises applications. Built by Duo Security. **Messageware OWA Guard**: Exchange Server OWA security with logon controls, CAPTCHA & alerts. Built by Messageware. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Duo Single Sign-On (SSO) and Messageware OWA Guard? **Duo Single Sign-On (SSO)** is made by Duo Security. **Messageware OWA Guard** is made by Messageware. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Duo Single Sign-On (SSO) a good alternative to Messageware OWA Guard? Often, yes. Duo Single Sign-On (SSO) and Messageware OWA Guard are both Access Management products, and both cover Authentication. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Duo Single Sign-On (SSO) vs DualShield SSO](https://cybersectools.com/compare/dualshield-sso-vs-duo-single-sign-on-sso) - [Duo Single Sign-On (SSO) vs Microsoft Entra ID](https://cybersectools.com/compare/duo-single-sign-on-sso-vs-microsoft-entra-id) - [Duo Single Sign-On (SSO) vs SecurEnvoy Access Management](https://cybersectools.com/compare/duo-single-sign-on-sso-vs-securenvoy-access-management) - [Messageware OWA Guard vs DualShield SSO](https://cybersectools.com/compare/dualshield-sso-vs-messageware-owa-guard) - [Messageware OWA Guard vs Microsoft Entra ID](https://cybersectools.com/compare/messageware-owa-guard-vs-microsoft-entra-id) - [Messageware OWA Guard vs SecurEnvoy Access Management](https://cybersectools.com/compare/messageware-owa-guard-vs-securenvoy-access-management) ## Alternatives to each - [See all Duo Single Sign-On (SSO) alternatives](https://cybersectools.com/alternatives/duo-single-sign-on-sso) - [See all Messageware OWA Guard alternatives](https://cybersectools.com/alternatives/messageware-owa-guard) --- Source: https://cybersectools.com/compare/duo-single-sign-on-sso-vs-messageware-owa-guard For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/duo-single-sign-on-sso.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Duo Single Sign-On (SSO) and Messageware OWA Guard: 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