Best Duo Security Alternatives (2026)

Duo Security alternatives at a glance

1. 1

   Auth0

   Identity

   Authentication and authorization platform.

   Auth0 plays in the premium tier of the identity/auth space — it's pricier than rolling your own with Cognito or Supabase Auth, and it's positioned against competitors like Okta and Clerk for teams that'll pay for reliability and breadth of features over raw cost. They're chasing companies that see auth as too risky to DIY, not price-sensitive indie devs.

   Plans: Free $0/mo · Essentials $35/mo · Professional $240/mo · Enterprise Contact Sales

   From $35/mo Free plan · Duo Security vs Auth0 → Auth0 pricing →
2. 2

   Clerk

   Identity

   Authentication for modern apps.

   Clerk isn't the cheap auth API (that's more like Supabase Auth or raw Firebase) — it's priced as a premium, dev-experience-first product competing with Auth0 and WorkOS for teams who'll pay more to ship faster. The free tier is generous enough to hook indie devs, but the real target is funded startups who'll outgrow Hobby fast and don't blink at $300+/mo once they're making money.

   Plans: Hobby $0/mo · Pro $25/mo · Business $300/mo · Enterprise Contact Sales

   From $25/mo Free plan · Duo Security vs Clerk → Clerk pricing →
3. 3

   Descope

   Identity

   No-code authentication flows.

   Descope sits mid-to-premium in the CIAM space — pricier than bare-bones auth libraries but cheaper than enterprise incumbents like Okta or Auth0 at scale. They're going after teams that outgrew DIY auth but aren't ready for a six-figure enterprise contract yet.

   Plans: Free Forever $0/mo · Pro $249/mo · Growth $799/mo · Enterprise Contact Sales

   From $249/mo Free plan · Duo Security vs Descope → Descope pricing →
4. 4

   Frontegg

   Identity

   User management for B2B SaaS.

   This is a land-and-expand play aimed at developers and growing startups who don't want to negotiate a contract just to ship login — free up to 7,500 MAUs undercuts competitors like Auth0 who gate features earlier. Frontegg's betting it can win devs on generous free usage now and convert them to Enterprise once they're locked in and scaling.

   Plans: Pay as you go $0/mo · Enterprise Contact Sales

   Custom pricing Free plan · Duo Security vs Frontegg → Frontegg pricing →
5. 5

   FusionAuth

   Identity

   Auth built for developers.

   FusionAuth sits in the mid-market auth space competing with Auth0 and Okta CIC, and they're clearly positioning as the more developer-friendly, cost-transparent alternative. At $162/mo for 1K MAUs, they're not the cheapest (Clerk and Stytch have aggressive lower tiers) but they undercut Auth0 significantly at scale, targeting teams that got burned by Auth0's pricing as they grew.

   Plans: Community $0/mo · Starter $162/mo · Essentials $240/mo · Enterprise Contact Sales

   From $162/mo Free plan · Duo Security vs FusionAuth → FusionAuth pricing →
6. 6

   JumpCloud

   Identity

   Open directory platform for IT.

   Hiding all prices behind 'contact sales' signals they're not trying to compete as the budget self-serve option against players like Okta's lower tiers or Google Workspace's built-in identity — they're positioning as a consultative, mid-to-upmarket play for IT teams managing mixed device fleets. This is a bet that buyers evaluating full directory-as-a-service replacements want a sales conversation, not a checkout page.

   Plans: Platform Essentials Contact Sales · Platform Contact Sales · Platform Prime Contact Sales

   Custom pricing Free trial · Duo Security vs JumpCloud → JumpCloud pricing →
7. 7

   Kinde

   Identity

   Auth and billing for modern SaaS.

   Kinde sits mid-market against auth players like Auth0 or Clerk — not the rock-bottom free-forever option, but noticeably cheaper entry pricing than legacy enterprise IAM vendors. They're clearly chasing developers who got sticker shock from Auth0's pricing but still need real production-grade auth, not just a hobbyist tool.

   Plans: Free $0/mo · Pro $25/mo · Plus $75/mo · Scale $250/mo

   From $25/mo Free plan · Duo Security vs Kinde → Kinde pricing →
8. 8

   Okta

   Identity

   Identity and access management.

   Entry pricing is aggressive and clearly built to undercut Microsoft Entra ID and even nudge out smaller identity players, making Okta look like a budget-friendly on-ramp. But hiding Professional and Enterprise pricing signals they're playing a premium, sales-led game once you're a real target — they want SMBs self-serving in the door and mid-market/enterprise buyers negotiating with a rep.

   Plans: Starter $6/mo per seat · Essentials $17/mo per seat · Professional Contact Sales · Enterprise Contact Sales

   From $6/mo Free trial · Duo Security vs Okta → Okta pricing →
9. 9

   Stytch

   Identity

   Passwordless auth infrastructure.

   This sits in the middle-to-premium range for auth providers — more generous than Auth0's free tier but not as aggressively cheap as newer entrants chasing pure volume. They're clearly courting technical teams who'll pay for a cleaner API and modern features (passkeys, fraud detection) rather than shops hunting for the rock-bottom option.

   Plans: Pay as you go $0/mo · Enterprise Contact Sales

   Custom pricing Free plan · Duo Security vs Stytch → Stytch pricing →
10. 10

    SuperTokens

    Identity

    Open-source user authentication.

    SuperTokens undercuts the Auth0/Okta crowd hard by giving away self-hosting entirely and pricing cloud MAUs cheap at the low end — this is clearly aimed at cost-conscious dev teams who got burned by auth vendor bills scaling faster than their user base. The volume discounts past 10K MAUs suggest they're also chasing mid-market accounts who'd otherwise negotiate enterprise deals elsewhere.

    Plans: Self-hosted $0/mo · Cloud $0/mo

    From $0/mo Free plan · Duo Security vs SuperTokens → SuperTokens pricing →

Comparing on features, not just price? Use our feature comparison template →

None of these fit? See every identity tool we price →

What is the best alternative to Duo Security?

Auth0 is the closest Duo Security alternative we track for identity. Paid plans start at $35/mo, and there is a free plan to start on. Clerk and Descope are also worth a look.

Are there free alternatives to Duo Security?

Yes — Auth0, Clerk, Descope and 5 more offer a free plan, so you can switch without paying up front.

How much do Duo Security alternatives cost?

Entry prices range from $0/mo (SuperTokens) to $249/mo (Descope). Each product page has the full verified tier breakdown.

Is there a cheaper alternative to Duo Security?

Yes — Duo Security starts at $3/mo, while SuperTokens ($0/mo) starts lower.