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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
    Delinea
    Best for: smb

    Privileged access management made seamless A popular authentication alternative to Duo Security — custom. Particularly strong for smb.

  2. 2
    Microsoft Entra ID
    Best for: enterprise

    If Duo Security feels like overkill or over-budget, Microsoft Entra ID is a leaner option with a genuinely usable free tier. Cloud identity and access management Pricing: free – $6/user/mo.

  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
    Ping Identity
    Best for: enterprise

    A well-rated authentication pick. Enterprise identity and access management Ping Identity 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
    CyberArk
    Best for: enterprise

    If Duo Security feels like overkill or over-budget, CyberArk is a leaner option. Identity security and privileged 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?

Delinea is our top-rated Duo Security alternative for 2026. Privileged access management made seamless Custom.

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.