Top 10 Duo Security Alternatives 2026
Secure your data with trusted two-factor authentication.
Main Features
- Access Control
- Activity Management
- Alerts
- Audit Trail
Pricing
Starts from $3/User/Month, also offers free forever plan
Free Trial available
Duo Security is a Multi-Factor Authentication (MFA) Software platform with a user rating of 4.5★ based on 23 reviews. Teams looking for alternatives typically need better pricing flexibility, easier deployment, or a closer feature fit for their specific use case. Below you'll find 10 vetted Multi-Factor Authentication (MFA) Software alternatives ranked by user rating, with filters to narrow by pricing, platform, and features — so you can find the right fit for 2026.
Duo Security vs Top Alternatives at a Glance
Side-by-side comparison of pricing, user rating, and free trial availability to help you decide faster.
| Tool | Best For | Pricing | Rating | Free Option |
|---|---|---|---|---|
| Duo Security Current | Multi-Factor Authentication (MFA) Software | $3 | 4.5 ★ | ✓ Yes |
 Protectimus | Multi-Factor Authentication (MFA) Software | $33.00 | 4.9 ★ | ✓ Yes |
 Salesforce Authenticator | Multi-Factor Authentication (MFA) Software | Custom pricing | No reviews | ✗ No |
 Daito | Multi-Factor Authentication (MFA) Software | Free trial | No reviews | ✓ Yes |
 Tecalis Authentication | Multi-Factor Authentication (MFA) Software | Custom pricing | No reviews | ✗ No |
 Authmoji | Multi-Factor Authentication (MFA) Software | Custom pricing | No reviews | ✗ No |
Showing 1-10 out of 10
List of the Top Duo Security alternatives as of October 2026
Compare business software, products, and services to find the best solution for your business or organization. Use the filters on the left to drill down by category, pricing, features, market segment, user ratings, and more.
Protectimus — from $33.00 · 4.9★
Enhanced security, simplified authentication.
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What is Protectimus?
Introducing Protectimus, the ultimate two-factor authentication solution designed to streamline the security process for businesses. With the tagline "Two Factor Authentication Made Simple," Protectimus offers a seamless integration process that allows for quick setup with any business system. ...
Read moreCommon Features
-
Two Factor Authentication (2FA)
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Authentication
-
Access Control
Unique Features
-
Multi-factor Authentication
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SMS Notification
Pricing
Starts from $33.00/month when Billed Yearly, also offers free forever plan
Salesforce Authenticator
Secure access, effortless protection for your digital assets.
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What is Salesforce Authenticator?
Introducing Salesforce Authenticator, an advanced mobile application designed to enhance your organization's security measures with a seamless two-factor authentication process. Boasting enterprise-grade protection, this intelligent app effortlessly combines state-of-the-art security features ...
Read moreCommon Features
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Two Factor Authentication (2FA)
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Authentication
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Access Control
Unique Features
-
Multi-factor Authentication
Pricing
Salesforce Authenticator offers custom pricing plan
Spotsaas Buyer Intelligence
Own the software buyers are comparing here? See who's weighing you against rivals — and who's comparing your competitors while you're not in the running.
Daito
Safeguard your team, simplify secure access.
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What is Daito?
Discover Daito, a revolutionary web-based 2FA authenticator designed to streamline the management of TOTP 2FA tokens for both agile startups and established enterprises. Daito empowers organizations to effortlessly handle Time-based One-Time Passwords (TOTP) across their teams, providing a ...
Read moreCommon Features
-
Two Factor Authentication (2FA)
-
Authentication
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Access Control
Unique Features
-
Multi-factor Authentication
Pricing
Free Trial available
Daito offers custom pricing plan
Tecalis Authentication
Secure access made easy, trusted by all.
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What is Tecalis Authentication?
Introducing Tecalis Authentication - a cutting-edge solution that empowers secure access to your products, services, and systems with ease. Our innovative product combines robust multi-factor authentication with state-of-the-art biometrics technology, ensuring maximum security without ...
Read moreCommon Features
-
Authentication
-
Access Control
Unique Features
-
Multi-factor Authentication
Pricing
Tecalis Authentication offers custom pricing plan
Authmoji
Secure your business with style.
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What is Authmoji?
Authmoji provides a two-factor authentication API and application that adds SMS-based MFA to websites in about 20 minutes. It validates user identities, confirms active phone numbers and email addresses, and gives businesses a programmable layer for managing user verification flows.
Read moreCommon Features
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Two Factor Authentication (2FA)
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Authentication
Unique Features
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Multi-factor Authentication
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Phone Verification
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For Developers
Pricing
Authmoji offers custom pricing plan
Verify Now — from $0.04
Secure your business with swift and reliable authentication.
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What is Verify Now?
Verify Now (by Message Central) provides SMS-based OTP verification for businesses, with bulk OTP delivery APIs for high-volume authentication needs. It integrates into existing authentication workflows to reduce fraud and unauthorized access, and supports customizable delivery options across ...
Read moreCommon Features
-
Authentication
-
Two Factor Authentication (2FA)
Unique Features
-
Multi-factor Authentication
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Phone Verification
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Fraud Prevention
Pricing
Starts from $0.04 when Billed Yearly, also offers free forever plan
Simple OTP — from $10.00
Secure, simple, and hassle-free authentication for your website.
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What is Simple OTP?
Simple OTP is a passwordless authentication solution for websites, providing one-click two-factor authentication via OTP. It includes detection and prevention of malicious login activity to keep user accounts secure without adding friction to the login process.
Read moreCommon Features
-
Authentication
Unique Features
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Password Management
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Blacklisting
Pricing
Free Trial available, Try Now
Starts from $10.00/month when Billed Yearly
BehavioSec
Seamless security. Effortless authentication.
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What is BehavioSec?
BehavioSec is a behavioral biometrics platform that authenticates users by analyzing patterns in how they type, swipe, and interact — without requiring passwords, one-time codes, or push notifications. It integrates with existing applications to detect bots and account takeover attempts without ...
Read moreCommon Features
-
Authentication
Unique Features
-
Fraud Prevention
-
Seamless Integration
Pricing
BehavioSec offers custom pricing plan
GetOTP
Secure and simple OTP verification for all.
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What is GetOTP?
GetOTP makes setting up OTP verification a breeze. Our web API does the heavy lifting for you, so you can focus on developing your service. With just a few lines of code integration, GetOTP can let you generate passwords, choose between SMS, Email, Voice, or a combination of them for your OTP ...
Read moreWhat reviewers like about GetOTP
- Easy OTP setup
- Supports multiple channels
- Automated retry attempts
Where GetOTP falls short
- Limited to OTP verification
- May require coding knowledge
- Not a full authentication suite
Common Features
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Authentication
Unique Features
-
Data Entry Verification
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For Developers
Pricing
Free Trial available, Try Now
VerifyKit
Seamless number verification with instant codes.
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What is VerifyKit?
VerifyKit, the ultimate solution for cutting down on SMS verification costs. Get users back into your app in just 6 seconds by letting them choose their preferred verification method. Never worry again about costly sms verification. With VerifyKit, verification codes can be sent instantly ...
Read moreWhat reviewers like about VerifyKit
- Cost-effective verification
- User-friendly interface
- Instant verification methods
Where VerifyKit falls short
- Limited to IM apps
- No SMS option
- May require user education
Common Features
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Authentication
Unique Features
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Customer Portal
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Shortcut Messages
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Data Entry Verification
Duo Security vs its closest competitors
Buyers comparing Duo Security usually weigh it against these 10 multi-factor authentication (mfa) software competitors, starting with Protectimus, Salesforce Authenticator and Daito. Each is compared against Duo Security on rating, pricing and feature coverage below.
What else works like Duo Security?
Searches for "sites like Duo Security" and "apps like Duo Security" land on the same set of options as "Duo Security alternatives" — the 10 options below cover both, whether you want a like-for-like replacement or something lighter.
Why each Duo Security alternative is here
Cost-effective verification
Watch for: Limited to IM apps
Why teams look for a Duo Security alternative
When Duo Security stops fitting, it's typically for reasons such as:
- May require user training
- Pricing can be high for small teams
- Limited customization options
- Dependent on internet connectivity
How to pick the right Duo Security replacement
Here's how the 10 alternatives differ where it counts: 7 offer a free tier.
How we score these.
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
