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Best Duo Security alternatives in 2026

Looking for an alternative to Duo Security? Whether you've outgrown it, find the pricing steep, or just want to weigh your options, these are the strongest authentication & identity alternatives in 2026 — ranked on pricing, features, and who each one fits best. Duo Security itself has a free tier, so we've flagged where each option is cheaper, simpler, or more specialized.

  1. 1
    Microsoft Entra ID
    Best for: enterprise

    Cloud identity and access management A popular authentication alternative to Duo Security with a genuinely usable free tier — free – $6/user/mo. Particularly strong for enterprise.

  2. 2
    Delinea
    Best for: smb

    If Duo Security feels like overkill or over-budget, Delinea is a leaner option. Privileged access management made seamless Pricing: custom.

  3. 3
    KnowBe4
    Best for: smb

    KnowBe4 goes head-to-head with Duo Security on features. Security awareness training and phishing simulation Best suited to smb. Custom.

  4. 4
    CyberArk
    Best for: enterprise

    A well-rated authentication pick. Identity security and privileged access management CyberArk starts at custom, making it a credible Duo Security replacement.

  5. 5
    BeyondTrust
    Best for: enterprise

    Privileged access and remote support security A popular authentication alternative to Duo Security — custom. Particularly strong for enterprise.

  6. 6
    Ping Identity
    Best for: enterprise

    If Duo Security feels like overkill or over-budget, Ping Identity is a leaner option. Enterprise identity and access management Pricing: custom.

  7. 7
    SailPoint
    Best for: enterprise

    SailPoint goes head-to-head with Duo Security on features. Identity security platform for the enterprise Best suited to enterprise. Custom.

  8. 8
    RSA SecurID
    Best for: enterprise

    A well-rated authentication pick. Hardware and software MFA for the enterprise RSA SecurID starts at custom, making it a credible Duo Security replacement.

Still considering Duo Security itself? Read our Duo Security review →

Frequently asked questions

What is the best Duo Security alternative?

Microsoft Entra ID is our top-rated Duo Security alternative for 2026. Cloud identity and access management Free – $6/user/mo.

Is there a free Duo Security alternative?

Yes — Microsoft Entra ID offers a free tier you can start on without a credit card.

Why switch from Duo Security?

Common reasons are price, a simpler feature set, better fit for a specific use case, or platform support. Each tool above notes where it has an edge over Duo Security.