How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- Okta is the fullest platform swap, with SSO and lifecycle management from $6 per user per month and a $1,500 annual minimum to budget for.
- Microsoft Entra ID is the obvious move for Microsoft 365 shops, with its paid P1 tier reported between $6 and $7 per user per month.
- OneLogin and JumpCloud serve mid size and small teams at published per user prices, and both have been Duo replacements in mixed estates.
- Keycloak costs nothing in licences for teams willing to host and run their own identity provider.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 Okta | Vendor neutral workforce identity | $6 per user/month | Free trial |
 Microsoft Entra ID | Organisations running Microsoft 365 | $7 per user/month | Yes |
 OneLogin | Mid market SSO and MFA at published prices | $3 per user/month | Free trial |
 JumpCloud | Small teams replacing Active Directory | $11 per user/month | Yes |
 Ping Identity | Large hybrid estates and federation | $3 per user/month | Free trial |
 Auth0 | Customer facing app login | $35 per month | Yes |
 Keycloak | Self hosted open source identity | Free | Yes |
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The best Duo Security alternatives in 2026
#1Okta
Best for: Vendor neutral workforce identity4.5/5 on
G2 (1,428 reviews, checked Oct 2026)
Visit okta.com
Starting price$6 per user/month
Free planFree trial
Okta is where Duo users land when they discover MFA was only the first identity problem. Joiner, mover and leaver automation, thousands of app integrations and governance sit in the same console, and the Starter suite begins at $6 per user per month billed annually. Nothing else here matches its integration breadth.
The bill is the discipline. Module pricing means a full Okta deployment lands in the $10 to $17 per user range in typical comparisons, and the annual minimum punishes teams under 25 people. If your estate is large and mixed, the trade is fair. If you only ever needed the second factor, it is a platform bought to replace a push notification.
What we like- The widest catalogue of prebuilt app integrations in the category, SSO, MFA, lifecycle management and governance under one vendor, vendor neutral, so it suits mixed Microsoft, Google and SaaS estates, mature adaptive policies and access certification
Watch out for- A $1,500 annual minimum makes it poor value for very small teams, modules stack, so the full platform costs well above the $6 entry figure, administration depth needs a dedicated owner as policies grow
#2Microsoft Entra ID
Best for: Organisations running Microsoft 3654.5/5 on
G2 (915 reviews, checked Oct 2026)
Visit microsoft.com
Starting price$7 per user/month
Free planYes
Entra ID wins the Duo argument inside Microsoft shops by arithmetic. A free tier ships with Microsoft 365 subscriptions, covering basic SSO and MFA, and the paid P1 tier adds Conditional Access, the policy engine that decides which sign ins get challenged based on device, location and risk. For an all Microsoft estate, paying a third vendor for push approvals is hard to justify.
The caveats are lock in and licensing literacy. P2, at roughly $9 to $10 per user per month depending on the source, is where identity protection lives, and untangling which bundle includes what has filled consultant calendars for years. Treat the per user figure as the start of a spreadsheet, not the whole of it.
What we like- Already included at a basic tier with Microsoft 365, so many teams pay nothing extra, Conditional Access policies are the benchmark for risk based sign in control, tight fit with Windows, Office and Azure estates, P2 adds identity protection and governance
Watch out for- The paid tiers cost real money on top of Microsoft 365, with P1 reported between $6 and $7 per user per month across 2026 sources, non Microsoft apps work, though the experience clearly favours home turf, licensing tiers and bundle rules are famously hard to read
#3OneLogin
Best for: Mid market SSO and MFA at published prices4.4/5 on
G2 (291 reviews, checked Oct 2026)
Visit onelogin.com
Starting price$3 per user/month
Free planFree trial
OneLogin, now part of One Identity, occupies the ground Duo users often actually stand on: a few hundred staff, a SaaS estate, and a need for SSO plus MFA without an identity science project. Its Basic tier has been reported at $3 per user per month, with higher bundles adding lifecycle management and desktop MFA.
Hold the price loosely. Current guides disagree on OneLogin's entry figure, and at least one September 2026 comparison could not verify its pricing page at all, so confirm the number on the vendor's own page before budgeting. The product case, simple deployment and honest mid market scope, does not depend on which dollar figure wins.
What we like- Straightforward SSO and MFA aimed squarely at the mid market, published pricing where several rivals insist on a sales call, multi tenant management that managed service providers rate, part of One Identity, with a broader identity portfolio behind it
Watch out for- Published figures disagree across 2026 guides, which report entry bundles anywhere from $2 to $4 per user per month, integration catalogue smaller than Okta's, less presence in the largest enterprise deals
#4JumpCloud
Best for: Small teams replacing Active Directory4.5/5 on
G2 (4,104 reviews, checked Oct 2026)
Visit jumpcloud.com
Starting price$11 per user/month
Free planYes
JumpCloud answers a different question from Duo's. Duo guards the door; JumpCloud is the directory behind the door, plus the device policies and the single sign on. Small and mid size teams retiring an ageing Active Directory often land here, because one subscription replaces the directory, the MFA and chunks of device management at once.
Price the bundle, not the line item. At $11 per user per month for SSO on annual billing in September 2026 checks, it costs more than an MFA tool and less than the three separate products it displaces. The free tier for 10 users makes the experiment cheap enough to run properly before committing.
What we like- A cloud directory, SSO, MFA and device management in one platform, which is more than Duo attempts, free for up to 10 users, strong fit for mixed Windows, Mac and Linux fleets, no domain controller to keep alive
Watch out for- SSO pricing reported at $11 per user per month billed annually, above pure MFA tools, per feature packaging can confuse a first quote, smaller federation depth than Ping or Okta for exotic enterprise setups
#5Ping Identity
Best for: Large hybrid estates and federation4.4/5 on
G2 (144 reviews, checked Oct 2026)
Visit pingidentity.com
Starting price$3 per user/month
Free planFree trial
Ping is the enterprise answer. Where Duo made MFA painless, Ping makes federation possible across decades of accumulated systems, cloud and on premises, workforce and customer facing. Banks and airlines with estates that cannot be forklifted into a single cloud directory are its natural home.
Scale is the admission price. September 2026 comparisons put workforce pricing from $3 per user per month with minimums around 5,000 users, and customer identity starting at five figure annual sums. If those numbers describe your organisation, Ping belongs on the shortlist. If they do not, keep scrolling.
What we like- Deep federation and protocol coverage for complex, hybrid estates, workforce and customer identity under one vendor, long track record in regulated industries with awkward legacy systems, workforce plans reported from $3 per user per month on annual contracts
Watch out for- That entry figure assumes enterprise scale, with minimum user counts reported in the thousands, implementation is a project, not an afternoon, sheer overkill for a company whose whole estate is forty SaaS apps
#6Auth0
Best for: Customer facing app login4.3/5 on
G2 (286 reviews, checked Oct 2026)
Visit auth0.com
Starting price$35 per month
Free planYes
Auth0 belongs on this list because a share of Duo searches are really about a product's own login screen. Duo protects employees reaching company systems; Auth0, Okta's customer identity arm, builds the sign in your customers use, with MFA, breached password detection and social login, priced per monthly active user from $35 a month after a large free tier.
Do not buy it as a workforce Duo swap, because it is not one. Buy it when the authentication you are designing faces the public. The distinction matters more than any feature table: workforce identity and customer identity share vocabulary and almost nothing else.
What we like- Built for the login inside your own product rather than the staff directory, free up to 25,000 monthly active users, generous for a launch, developer first, with strong documentation and quick integration, paid plans from $35 per month
Watch out for- It solves a different problem from Duo, so it replaces nothing for workforce MFA, pricing scales with monthly active users and can climb at consumer scale, owned by Okta, which matters if vendor independence is your reason for switching
Starting priceFree
Free planYes
Keycloak is the exit from per user pricing altogether. The software costs nothing, speaks SAML and OpenID Connect, and provides MFA and user federation that cover most of what a mid size estate needs. Engineering led organisations run identity on it for years without missing a commercial platform.
The invoice arrives as hours. Every control you gain is a duty you accept, and an identity provider is the last system to run casually, because it guards everything else. Teams with platform engineers treat that as a fair trade. Teams without them should read the hosted prices above again and pay one gladly.
What we like- Open source and free in licences, with SSO, MFA and federation in the box, full control of hosting and data, valuable in regulated or offline environments, backed by Red Hat's ecosystem, with commercial support available through related offerings
Watch out for- You run it: patching, upgrades, high availability and security reviews are your team's work, no vendor to call at 3 a.m. unless you buy support separately, total cost is engineering time, which small teams feel first
How we chose
We picked alternatives that cover the real reasons organisations move off Duo: outgrowing MFA into full identity platforms, already paying for Microsoft 365, retiring a directory, authenticating customers, or refusing per user pricing. Duo itself is never an entry, by the rules of an alternatives list. OneLogin's pricing is flagged in its entry because current guides disagree and one could not verify the vendor page; treat its figure as provisional. Prices were checked against vendor pages and comparisons between September and October 2026. We did not claim hands-on testing of any product.
Price the whole identity stack, not the second factor
Duo's $3 entry tier looks cheap because it is scoped narrowly, and every alternative here sells something adjacent as well. The honest comparison adds up everything the switch replaces or adds: the directory, SSO licences, lifecycle automation, and the administrator hours each platform consumes. A $11 JumpCloud seat that retires a domain controller can cost less than a $3 Duo seat stacked on three other subscriptions.
Minimums and user count thresholds matter as much as rates. Okta's $1,500 floor, Ping's thousands of users, and Auth0's per active user scaling each reshape the bill for a different company shape. Model your actual headcount, including contractors and service accounts, before comparing headline prices, because identity vendors count identities creatively.
Finally, plan the migration itself. Moving MFA enrolment for a whole workforce takes communication and a support spike no matter the destination. Run the free tiers and trials on this list with a pilot group first, and let their helpdesk tickets, not a feature grid, make the final call.
Frequently asked questions
Why do companies switch from Duo?
Usually scope, not failure: they need SSO, lifecycle automation and governance beside MFA, or their Microsoft 365 bundle already includes identity, or they want to stop paying per user for authentication they can host.
Is Microsoft Entra ID really free?
A basic tier is included with Microsoft 365 and Azure subscriptions, covering SSO and standard MFA. The fuller Conditional Access and identity protection features sit in the paid P1 and P2 tiers, reported between $6 and $10 per user per month.
Can Keycloak fully replace Duo?
Functionally for many estates, yes: it provides SSO, MFA and federation at no licence cost. The replacement cost is operational, since your team hosts, patches and defends the identity provider itself.
Which alternative suits a 30 person company?
JumpCloud or OneLogin. Both publish per user prices, cover directory or SSO needs beyond MFA, and offer free or trial access sized for a small pilot. Okta's annual minimum makes it a stretch at that headcount.
Does Auth0 replace Duo for staff logins?
No. Auth0 is customer identity, the login inside your own product. It appears here because many Duo searches are really about product authentication, which is a different purchase.
Sources we checked (0)
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.