Sites like Duo

01 · Entity

About Duo

Duo duosecurity.com

IAM & MFA Identity Security for Business, Humans, AI | Cisco Duo

Cisco Duo secures workforce access and defends against advanced identity threats with IAM, phishing-resistant MFA, SSO, passwordless, and device trust.

Top 10K · #2,759 English 11 technologies Crawled Nov 6, 2026

Visit Duo

Summary by Claude

Cisco Duo provides identity and access management for organizations, including multi-factor authentication, single sign-on, passwordless login, device trust checks, a user directory and identity threat analytics.

Who it’s for

IT and security teams at businesses and government

Business model

Subscriptions

• identity and access management
• multi-factor authentication
• phishing-resistant MFA
• single sign-on
• passwordless authentication
• device trust
• zero trust access
• identity threat detection
• AI agent identity security

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Duo’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.

1. 01
   Okta okta.com Top 1K English

   Secure Identity for Employees, Customers, and AI | Okta

   The Okta and Auth0 Platforms enable secure access, authentication, and automation — putting identity at the heart of business security and growth.

   • Apple Business
   • Atlassian
   • Google Search Console
   • Marketo
   • Amazon Route 53
   • Adobe

   0 say Okta is a good alternative to Duo 0 say Okta isn’t a real alternative to Duo

   Comment
   Very close cos 0.896
2. 02
   JumpCloud jumpcloud.com Top 10K English

   JumpCloud: Unified Platform for Identity, Access, & Devices

   JumpCloud makes it simple to manage Windows, Apple, Linux, and Android devices and to deliver secure access with SSO, MFA, Zero Trust, RADIUS, and more.

   • Apple Business
   • Atlassian
   • Amazon CloudFront
   • Google Search Console
   • Google Workspace
   • Marketo

   0 say JumpCloud is a good alternative to Duo 0 say JumpCloud isn’t a real alternative to Duo

   Comment
   Close cos 0.890
3. 03
   Cisco cisco.com Top 1K English

   AI Infrastructure, Secure Networking, and Software Solutions - Cisco

   Cisco is a worldwide technology leader powering an inclusive future for all. Learn more about our products, services, solutions, and innovations.

   • Apple Business
   • Atlassian
   • Bing Webmaster Tools
   • Google Search Console
   • Microsoft 365
   • Adobe

   0 say Cisco is a good alternative to Duo 0 say Cisco isn’t a real alternative to Duo

   Comment
   Close cos 0.879
4. 04
   Auth0 auth0.com Top 1K English

   Secure Authentication & Ship Faster | Auth0

   Secure users, AI agents, and more with Auth0, a production-ready authentication and authorization platform built to help you ship faster and drive sign-ups.

   • Apple Business
   • Atlassian
   • Google Search Console
   • Marketo
   • Microsoft 365
   • Amazon Route 53

   0 say Auth0 is a good alternative to Duo 0 say Auth0 isn’t a real alternative to Duo

   Comment
   Close cos 0.875
5. 05
   Dashlane dashlane.com Top 10K English

   Dashlane: Password management & credential security platform

   Top-rated password manager and credential protection solution for enterprises, businesses, and individuals.

   • Atlassian
   • Google Search Console
   • Google Workspace
   • Marketo
   • Microsoft 365
   • Amazon Route 53

   0 say Dashlane is a good alternative to Duo 0 say Dashlane isn’t a real alternative to Duo

   Comment
   Close cos 0.868
6. 06
   ClassLink classlink.com Top 1K English

   ClassLink | Identity & Access Management for Education

   ClassLink is a provider of identity and access management products offering instant access to apps and files with SSO, class rostering, account provisioning, and analytics.

   • Apple Business
   • Atlassian
   • Google Search Console
   • Microsoft 365
   • Amazon Route 53
   • Adobe Fonts

   0 say ClassLink is a good alternative to Duo 0 say ClassLink isn’t a real alternative to Duo

   Comment
   Close cos 0.865
7. 07
   1Password 1password.com Top 10K English

   Password Manager, Secrets, and Access Management | 1Password

   Protect passwords and secrets, manage app access, and secure AI tools with 1Password. Easy to adopt from growing teams to enterprise.

   • Atlassian
   • Google Search Console
   • Google Workspace
   • Amazon Route 53
   • Zendesk
   • Amazon SES

   0 say 1Password is a good alternative to Duo 0 say 1Password isn’t a real alternative to Duo

   Comment
   Close cos 0.863
8. 08
   Tenable® tenable.com Top 10K English

   Vulnerability and exposure management | Cloud and AI security | Tenable®

   The leader in exposure management and AI security, Tenable cybersecurity solutions reduce cyber risk across IT, OT, cloud, identity & hybrid attack surfaces.

   • Apple Business
   • Atlassian
   • Google Search Console
   • Marketo
   • Microsoft 365
   • Adobe

   0 say Tenable® is a good alternative to Duo 0 say Tenable® isn’t a real alternative to Duo

   Comment
   Close cos 0.862
9. 09
   Menlo Security menlosecurity.com Top 10K English

   Browser Security for Humans and Agents | Menlo Security

   Secure your agentic enterprise with the Menlo Browser Security Platform. Get zero-day threat prevention, secure access, and data security in one unified platform.

   • Apple Business
   • Atlassian
   • Google Search Console
   • Google Workspace
   • Amazon Route 53
   • Zendesk

   0 say Menlo Security is a good alternative to Duo 0 say Menlo Security isn’t a real alternative to Duo

   Comment
   Close cos 0.862
10. 10
    DataDome datadome.co Top 10K English

    datadome.co

    cybersecurity company

    • Apple Business
    • Atlassian
    • Amazon CloudFront
    • Google Search Console
    • Google Workspace
    • Microsoft 365

    0 say DataDome is a good alternative to Duo 0 say DataDome isn’t a real alternative to Duo

    Comment
    Close cos 0.862
11. 11
    Bitwarden bitwarden.com Top 10K English

    Best Password Manager for Business, Enterprise & Personal | Bitwarden | Bitwarden

    Bitwarden is the trusted, open source password manager for individuals, teams, and enterprises. Securely store, share, and manage passwords, passkeys, and secrets. Free to start.

    • Atlassian
    • Google Search Console
    • Google Workspace
    • Microsoft 365
    • Amazon SES
    • Cloudflare DNS

    0 say Bitwarden is a good alternative to Duo 0 say Bitwarden isn’t a real alternative to Duo

    Comment
    Close cos 0.862
12. 12
    Clerk clerk.com Top 10K English

    Clerk | Authentication and User Management

    The easiest way to add authentication and user management to your application. Purpose-built for React, Next.js, Remix, and “The Modern Web”.

    • Google Search Console
    • Google Workspace
    • Clerk
    • Meta Business Suite
    • Next.js
    • React

    0 say Clerk is a good alternative to Duo 0 say Clerk isn’t a real alternative to Duo

    Comment
    Close cos 0.859
13. 13
    iubenda iubenda.com Top 10K English

    Compliance Solutions for Websites, Apps and Organizations | iubenda

    iubenda is your 360° compliance solution for global data privacy laws. Privacy policy generator, cookie consent management, ROPA, Terms and more.

    • Apple Business
    • Google Search Console
    • Microsoft 365
    • Amazon Route 53
    • Amplitude
    • Bootstrap

    0 say iubenda is a good alternative to Duo 0 say iubenda isn’t a real alternative to Duo

    Comment
    Close cos 0.861
14. 14
    Zscaler zscaler.com Top 10K English

    Leading Cloud Enterprise Security Provider for Zero Trust

    Zscaler is a leading cloud enterprise security provider helping global businesses adopt zero trust for secure digital transformation.

    • Apple Business
    • Atlassian
    • Bing Webmaster Tools
    • Google Search Console
    • Google Workspace
    • Marketo

    0 say Zscaler is a good alternative to Duo 0 say Zscaler isn’t a real alternative to Duo

    Comment
    Close cos 0.858
15. 15
    Docusign docusign.com Top 10K English

    Docusign | #1 in Electronic Signature and Intelligent Agreement Management

    Create, commit to, and manage your agreements all in one platform with Docusign IAM. Electronically sign for free.

    • Apple Business
    • Atlassian
    • Google Search Console
    • Google Workspace
    • Microsoft 365
    • Adobe

    0 say Docusign is a good alternative to Duo 0 say Docusign isn’t a real alternative to Duo

    Comment
    Close cos 0.857
16. 16
    TrustArc trustarc.com Top 10K English

    Data Privacy Management Software & Solutions | TrustArc

    TrustArc bridges the gap between privacy and data for deeper insights, broader access, and continuous compliance. Contact us for more information!

    • Google Search Console
    • Google Workspace
    • Marketo
    • Microsoft 365
    • Amazon Route 53
    • Adobe Fonts

    0 say TrustArc is a good alternative to Duo 0 say TrustArc isn’t a real alternative to Duo

    Comment
    Close cos 0.858
17. 17
    MarkMonitor markmonitor.com Top 1K English

    company

    • Apple Business
    • Atlassian
    • Google Search Console
    • Microsoft 365
    • Cloudflare
    • OneTrust

    0 say MarkMonitor is a good alternative to Duo 0 say MarkMonitor isn’t a real alternative to Duo

    Comment
    Close cos 0.856
18. 18
    Sectigo sectigo.com Top 10K English

    Certificate Management Solutions & SSL Certificates | Sectigo® Official

    Sectigo is a leading provider of SSL certificates & automated certificate management solutions. A Certificate Authority trusted by global brands for 20+ years.

    • Apple Business
    • Atlassian
    • Bing Webmaster Tools
    • Google Search Console
    • Microsoft 365
    • Adobe

    0 say Sectigo is a good alternative to Duo 0 say Sectigo isn’t a real alternative to Duo

    Comment
    Close cos 0.856
19. 19
    CISA cisa.gov Top 10K English

    Home Page | CISA

    Cybersecurity and Infrastructure Security Agency: America's Cyber Defense Agency

    • Atlassian
    • Google Search Console
    • Microsoft 365
    • Adobe
    • Drupal
    • Google Fonts

    0 say CISA is a good alternative to Duo 0 say CISA isn’t a real alternative to Duo

    Comment
    Close cos 0.857
20. 20
    Mimecast mimecast.com Top 10K English

    Human Risk Management & Advanced Email Security | Mimecast

    Protect email and collaboration tools with Mimecast. Manage human risk and stay ahead of cyber threats with advanced security solutions.

    • Atlassian
    • Google Search Console
    • Microsoft 365
    • ASP.NET
    • Azure Front Door
    • DocuSign

    0 say Mimecast is a good alternative to Duo 0 say Mimecast isn’t a real alternative to Duo

    Comment
    Close cos 0.856

Ranked by score: the cosine similarity of each site’s vector to duosecurity.com’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Duo uses too. Votes and comments come from visitors and don’t change the ranking.

04 · Fingerprints

Technology

What Duo is built with, and what its closest competitors use, from its homepage’s code and its DNS records.