Best Authentication Software for Startups
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Compare the Top Authentication Software for Startups as of June 2025
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What is Authentication Software for Startups?
Authentication software provides the tools to authenticate and authorize user access through a software or mobile application. Compare and read user reviews of the best Authentication software for Startups currently available using the table below. This list is updated regularly.
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1
Kinde
Kinde
Authentication happens at some of the most important, and highly impactful, places in your customers' journey. Take control of user authorization with a passwordless authentication, social integrations, and enterprise SSO. Support the branding of all your customers with custom domains and a fully customisable UI by bringing your own pages and designs. Integrate with complex requirements and run your own code during authentication using our powerful workflows. Organise all your business customers using organizations to easily segergate them and fine tune the authentication experience to their individual needs. Monetize your ideas quickly with Kinde's billing tools. Create subscription plans and collect revenue effortlessly. Kinde adapts to your business model, supporting B2C, B2B, and B2B2C with robust organization management and flexible billing logic that scales with your customers.Starting Price: $25 per month -
2
Cisco Duo
Cisco
Cisco Duo is a cloud-based identity security solution that protects organizations from identity-based threats and boosts workforce productivity. Trusted by over 40,000 organizations worldwide, Duo delivers an exceptional access management experience across all users, devices, and applications, making access to resources secure, seamless, and easy. Duo with Cisco Identity Intelligence provides deep visibility across your identity ecosystem, adding a powerful security layer to any identity infrastructure. Offer users a world-class access experience through Duo Passport to eliminate MFA friction and fatigue without sacrificing security. To stop threats, Duo verifies user identities with strong authenticators including Duo passwordless, Verified Duo Push with number matching, and phishing-resistant factors like biometrics and FIDO2 security keys. Paired with deep insights into users’ devices, Duo gives you the control to adaptively limit access based on device health or user risk.Starting Price: $3 per user per month -
3
Auth0
Okta
Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.Starting Price: Free plan -
4
Plaid
Plaid
Plaid is a global data network that powers the tools millions of people rely on to live a healthier financial life. Our ambition is to facilitate a more inclusive, competitive, and mutually beneficial financial system by simplifying payments, revolutionizing lending, and leading the fight against fraud. Plaid works with over 12,000 companies including fintechs like Venmo and SoFi, several of the Fortune 500, and many of the largest banks to empower people with more choice and control over how they manage their money. Headquartered in San Francisco, Plaid’s network spans over 12,000 institutions across the US, Canada, UK and Europe.Starting Price: Free -
5
Udentify
Fraud.com
Know the real identity of your customer, user, or employee with the Udentify Identity Verification and Biometric Authentication solution. Challenges we solve: - Identify verification - Onboarding - New account opening - Age verification - Fraud prevention - Biometric authentication - Passwordless authentication - Strong customer authentication - KBA replacement - KYC and AML compliance Behind the scenes, Udentify embeds cutting-edge technologies into our identity verification and biometric authentication solution via a lightweight and flexible SDK. We are constantly investing in our technologies to stay at the forefront of fraud detection, compliance, and user experiences.Starting Price: $0.17 -
6
FusionAuth
FusionAuth
FusionAuth provides a comprehensive authentication platform designed for flexibility, security, and developer ease. It supports a wide range of authentication methods including username/password, passwordless, multi-factor authentication (MFA), and social logins. FusionAuth is built API-first, allowing seamless integration into any tech stack or architecture. It supports industry protocols like OAuth2, OIDC, and SAML for secure and standards-compliant authentication. Whether deployed on-premises, in the cloud, or in hybrid environments, FusionAuth gives you full control over the user login experience while helping you meet compliance requirements such as GDPR, HIPAA, and COPPA.Starting Price: $0 -
7
Sumsub
Sumsub
Sumsub is a full-cycle identity authentication platform that secures every step of the user journey. With Sumsub’s customizable KYC, KYB, AML, Transaction Monitoring and Fraud Prevention solutions, you can orchestrate your verification process, welcome more customers worldwide, meet compliance requirements, reduce costs and protect your business. Sumsub achieves the highest conversion rates in the industry—91.64% in the US, 95.86% in the UK, and 97.89% in Hong Kong—while verifying users in less than 50 seconds on average. Sumsub’s methodology follows FATF recommendations, the international standard for AML/CTF rules and local regulatory requirements (FINMA, FCA, CySEC, MAS, BaFin). Sumsub has over 2,000 clients across the fintech, crypto, transportation, trading, e-commerce and gaming industries including Bitpanda, Wirex, Avis, Bybit, Huobi, Kaizen Gaming, and TransferGo.Starting Price: $1.35 per verification -
8
Veriam
Veriam
Veriam goes beyond traditional authentication tools by combining identity management, access control, and subscription management into one secure platform. Unlike standalone authentication systems, Veriam's integrated platform reduces admin, cuts down on tools, and creates a better experience for users and service providers. Users only need one login to access products, subscriptions, and data from any organization using Veriam—improving security while making login fast and simple. Key Features: ✔️ Single Sign-On (SSO): Secure, flexible logins with Google, Microsoft, or email. ✔️ Role-Based Access Control: Assign roles and permissions for access based on user needs. ✔️ User Invites & Onboarding: Place new users in the right teams automatically with email invites. ✔️ Profile & Data Management: Users manage their profiles, access, and data preferences. ✔️ Security & Compliance: Veriam meets industry standards, ensuring data stays secure and private. Try us out today!Starting Price: Free -
9
MIRACL
MIRACL
World's fastest MFA with the highest login success rate above 99%. Highly secure, password-free login in just two seconds. MIRACL works on any device or browser, removing the barriers to authentication to optimise the the user experience, decrease costs, and win lost revenue. Protect your users. Simplify their journey. MIRACL Trust offers a safer, smoother authentication experience. One step. No passwords. No problem. Traditional multi-factor authentication is slow and cumbersome. MIRACL is a smoother, safer alternative to traditional MFA. 2 seconds to log in with error rates as low as 1/10th that of passwords. No passwords necessary. One PIN, and you’re in. Our cryptographic technology means that user info stays with users. MIRACL Trust offers an effortless login experience that puts users first, rolls out hassle-free, and keeps data locked up tight. PSD2 SCA compliant, GDPR compliant and satisfies NJ Gaming MFA requirements. -
10
Auth Armor
Auth Armor
Harness the power of biometrics on smartphones to make authentication easy for any application or website, creating a new approach to logging and authenticating online. Passwordless and 2-factor authentication that lets you authenticate your users with the smartphones in their pockets. Auth Armor puts secure authentication in the hands of every user — no weak passwords or cumbersome codes. We have built powerful APIs, SDKs, libraries, and dashboards to allow you to build what you want to build, how you want to build it. Use our tools to build authentication into any app, using any flow you would like. We offer Consumer facing and workforce protection, giving you the power and flexibility to secure anything, the way you need it. Auth Armor is the fastest and easiest mobile authenticator available. We support instant push messaging directly to user's devices enabling the fastest login and authentication experience.Starting Price: FREE for 10,000 active users! -
11
GateKeeper Enterprise
Untethered Labs, Inc.
Passwordless, proximity login to PCs, Macs, websites, and desktop applications. Hands-free, wireless 2FA and password manager through active proximity-detection. IT admins can dynamically allow users to log in to their computers and websites with a physical key either automatically, by touch, by pressing Enter, or with a PIN. Seamlessly login, switch users, switch computers, and logout without passwords, touch, or trouble - just a key. Once a user walks away, the computer will lock, blocking access to the computer and web passwords. With continuous authentication, users are always being checked to ensure that they require access. No more typing passwords. Admins and compliance can now automate password security from a central admin console: enforce stronger passwords, enforce 2FA, and give employees the power of password-free login without interrupting workflow. Reduce helpdesk tickets related to forgotten passwords/password resets. Login and auto-lock with proximity.Starting Price: $3/user/month -
12
Visual Guard
Novalys
Visual Guard is an advanced identity and access management (IAM) tool offering a complete solution for securing sensitive applications and data. With centralized management of users and permissions, Visual Guard facilitates the implementation of robust, standards-compliant security policies. User management : Create, modify & delete user accounts Integration with LDAP or Active Directory directories Automatic synchronization of user information Access control : Precise definition of access rights to features and resources Role and Permission Management Multi-factor authentication (MFA) Single Sign-On (SSO) Security Audit and Monitoring : Permission Matrix Detailed Event log Real-time and Historical Graphs Integration & compatibility : Compatibility with major development platforms, frameworks, and protocols. .NET API Benefits : Simplified access management Enhanced data security Improved regulatory compliance Reduce identity management costStarting Price: 1.55/month/user -
13
Google Authenticator
Google
Google Authenticator generates 2-Step Verification codes on your phone. 2-Step Verification provides stronger security for your Google Account by requiring a second step of verification when you sign in. In addition to your password, you’ll also need a code generated by the Google Authenticator app on your phone. You can use your Google Account to more easily and securely sign in to thousands of sites and services on the web, while keeping your privacy choices transparent in one place. Protect your Google Account with Security Checkup. This detailed tool provides you with personalized and practical recommendations to help you strengthen the security of your Google Account. Hacked passwords are more common than you think. Two-step verification protects you from unauthorized access to your account. To do this, it requests a second step after entering the password. -
14
LastPass
LastPass
LastPass is a cloud-based password manager available on any system or device, ensuring credentials are protected, private, and always within reach. Simple to set up and effortless to use, LastPass delivers the world's most convenient password management experience for consumers and businesses of all sizes and technical requirements. Say goodbye to password fatigue by generating, sharing, accessing, and managing credentials at the click of a button, while preventing bad actors from accessing precious data and account logins. Businesses also utilize LastPass to consolidate their tech stacks or to fill access management gaps with native integrations for MS Entra, Okta, and other IdPs and IAMs. With over 100 customizable policies, flexible privileges, detailed reporting, MFA and passwordless authentication options, LastPass makes it easy for organizations with numerous logins and increasing security risks to standardize password management company wide.Starting Price: $4 per user per month -
15
Authy
Twilio
Enable 2FA for your favorite sites. Go beyond the password and protect yourself from hackers and account takeovers. Simple to setup, secure cloud backup, multi device support. Defeat cyber criminals & avoid account takeovers with stronger security, for free! Watch the video below to learn more about why you should enable 2FA for your accounts. Relying on just usernames and passwords to secure your online accounts is no longer considered safe. Data breaches occur daily and hackers are always inventing new ways to take over your accounts. Protect yourself by enabling two-factor authentication (2FA). This blocks anyone using your stolen data by verifying your identity through your device. Enable 2FA now to protect your accounts online. -
16
Microsoft Authenticator
Microsoft
Go passwordless. Enter your username and confirm your sign-in with your phone. It’s that easy! Passwords can be forgotten, stolen, or compromised. With Authenticator, your phone provides an extra layer of security on top of your PIN or fingerprint. Use Authenticator to sign-in to Outlook, OneDrive, Office, and more. Protect all of your accounts with two-step verification. The app also helps you secure all of your online accounts by using the industry standard time-based OTP (one-time password) codes. -
17
Protectimus
Protectimus Limited
Protectimus SAAS two-factor authentication service is already set up in the cloud and available 24/7, just register and begin the integration via API or using a ready-made integration plugin. The Protectimus On-Premise MFA platform can be deployed on the premises of your organization or in a private cloud. Radius, Citrix NetScaler and XenApp VMWare, Active Directory, LDAP, Windows Logon, and RDP, OWA, ADFS, RoundCube, Dynamic Passwords, API, SDK, customized individual development. Dynamic Strong Password Authentication integrates directly with Microsoft Active Directory (or any other user directory) to add a six-digit password onto users’ static passwords. Today, data violation happens regularly. If you want to assure your data is thoroughly protected, strong authentication methods are vital. We are likely to display personal info without any outside intervention. But when it comes to business, we would not limit user authentication and identification to a single password.Starting Price: $33 per month -
18
Frontegg
Frontegg
Frontegg is a user management platform, designed for the Product-Led Growth (PLG) era. Frontegg provides blazing-fast integration of a powerful user infrastructure, designed to handle modern application use-cases. Our platform supports app builders by covering all the way from fundamental authentication flows to the most advanced capabilities such as complex organizational structures (multi-tenancy), fine-grained authorization, API-token management, self-service admin portal for end-users, subscription enforcement, single-sign-on (SSO), and much more. Frontegg’s interfaces are embedded as a UI layer within your app and becomes a customer-facing management interface for your end-users, both on the personal and workspace levels. Frontegg also powers-up your backend through rich SDKs supported in various languages and frameworks.Starting Price: Free -
19
Cipherise
Cipherise
With over 5000 SAML integrations, experience seamless and secure connections with Cipherise - the platform that offers infinite ways to connect with your employees and customers. By integrating with Cipherise, you can easily build authentication into any app, and offload customer identity management to create delightful experiences quickly. With Cipherise's mutual, bi-directional authentication, you get the security, scalability, reliability, and flexibility to build the stack you need. You will know the person who registered continues to be that person, and they know you are you. Plus, you can protect and enable your employees, contractors, and partners with Cipherise enterprise solutions - no matter where they are. One of the key features, that separate Cipherise from all others - Cipherise eliminates Mass Data Breaches. An attack is limited to one user on one system. Additionally, we store no passwords. Cipherise streamlines your identity and access management needs.Starting Price: $30 per user per month -
20
Authentication Cloud faster, easier, and more user-friendly. Let customers access your online services without passwords and costly SMS fees. With the Nevis Authentication Cloud, you can offer your customers maximum security and a smooth user experience in no time at all. Authentication as a service – faster, easier and more user-friendly. Enable customers to access your online services without passwords and costly SMS fees. With the Nevis Authentication Cloud you can offer your customers maximum security and a smooth user experience in no time at all. With the Authentication Cloud from Nevis, you can offer your customers maximum security and a smooth user experience in no time at all. Remembering a long, complex password for each individual account no longer fits into today’s fast, mobile world. New solutions with password-free authentication such as fingerprint or face ID are not only faster and more convenient but also significantly more secure for all parties involved.Starting Price: $500 per month
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21
Microsoft Entra ID
Microsoft
Microsoft Entra ID (formerly known as Azure Active Directory) is a comprehensive identity and access management cloud solution that combines core directory services, application access management, and advanced identity protection. Safeguard your organization with a cloud identity and access management solution that connects employees, customers, and partners to their apps, devices, and data. Protect access to resources and data using strong authentication and risk-based adaptive access policies without compromising user experience. Provide a fast, easy sign-in experience across your multicloud environment to keep your users productive, reduce time managing passwords, and increase productivity. Manage all your identities and access to all your applications in a central location, whether they’re in the cloud or on-premises, to improve visibility and control. -
22
LoginRadius
LoginRadius
LoginRadius empowers businesses to deliver a delightful customer experience without compromising security. Using our customer identity platform, companies can offer a streamlined login process while protecting digital accounts and complying with data privacy regulations. LoginRadius serves over 3,000 businesses with a monthly reach of 700 million users worldwide. Key platform features include registration services, adaptive security, integration with third-party applications, and customer insights. The company has been named an industry leader in customer identity and access management (CIAM) by Gartner, KuppingerCole, and Computer Weekly. Microsoft is a major technology partner and investor. LoginRadius is headquartered in Vancouver, Canada, with additional offices in Toronto, USA, United Kingdom, Australia, and India. LoginRadius Services: API Authentication OAuth Data Management Secure Login Single Sign On SAML SSO Social Sign On Two Factor Authentication -
23
Trust Swiftly
Trust Swiftly
Only ask what you need to with 10 identity verification methods. Trusted by businesses that block more than 1% of transactions or spend more than 1-hour reviewing customers. Approve more real customers while blocking fraudulent users and risky transactions. Automate identity proofing and populate fraud solutions with more user data. Accept or reject based on user data and leverage it to fight chargebacks. Building a system for reviews or enhanced user authentication takes a lot of time. With Trust Swiftly, we provide multiple methods for your customers to verify themselves and automatically populate it in Sift, allowing for robust workflows. Whether you are an eCommerce store, app, or marketplace, we have the verification levels for you. Require verification adaptively depending on Sift scores or business rules by applying friction smartly.Starting Price: $0.01 per verification -
24
ID.me
ID.me
ID.me simplifies how individuals prove and share their identity online. The ID.me secure digital identity network has over 98 million members, as well as partnerships with 30 states, 10 federal agencies, and over 500 name-brand retailers. The company provides identity proofing, authentication and community verification for organizations across sectors. The company's technology meets the federal standards for consumer authentication and is approved as a NIST 800-63-3 IAL2 / AAL2 conformant credential service provider by the Kantara Initiative. ID.me's Identity Gateway also has a Federal Risk and Authorization Management Program (FedRAMP) Moderate Authority to Operate (ATO). ID.me is the only provider with video chat and is committed to "No Identity Left Behind" to enable all people to have a secure digital identity. -
25
Rublon
Rublon
Rublon enables your workforce to securely access your organization's networks, servers and applications. Protect your data via easy-to-use multi-factor authentication and comply with data protection regulations like GDPR. Deploy Rublon organization-wide, enabling MFA for all your cloud apps, VPNs, servers, workstations, internal as well as on-premise apps.Starting Price: $1/month/user -
26
Routee
AMD Telecom
Routee is an intelligent omnichannel communication platform (CPaaS) offering advanced Web and API automation for all industries worldwide. Powered by AMD Telecom’s robust infrastructure, Routee's services enable businesses to optimize their marketing & business processes. -SMS Marketing: tailor-made messages based on customers' individual preferences -Email Marketing: personalized newsletters & email campaigns based on an audience's behavioral data -Transactional Email: automated emails to customers on important data regarding their transactions -Marketing Automation: rich forms & customer data capture, automation of repetitive marketing tasks, and tracking of marketing campaigns -Two Factor Authentication: a second layer of security with fallback through SMS, Voice, Viber & Missed Call -Cloud IVR: multilingual capabilities, turning speech into text, & text to human-sounding speech -Push Notification: personalized web & mobile push notifications, based on segmentation and userStarting Price: $0.01 one-time fee -
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Keyless Authenticator
Keyless Technologies
Nothing to remember. Nothing to steal. You are the key. Adopt zero-trust authentication to protect your remote workforce and enable strong customer authentication with just a look. Anywhere. Any time. Any device. Embrace passwordless, multi-factor authentication to eliminate fraud, phishing and credential reuse – all while enhancing customer and employee experiences and protecting their privacy. Unique capabilities powered by unique technology. Hardware Agnostic. Since we do not rely on the device hardware or sensors, Keyless can be deployed on a large set of devices and appliances. Drive better outcomes for your organization by eliminating passwords. Top-Notch Security. No central honeypot, no data on user devices. Data can never be stolen or lost because no private information is accessible to anyone but the user. Reduce password associated costs by going passwordless. Password Reset Costs. The average helpdesk labor cost is estimated at $70. -
28
RSA SecurID
RSA Security
RSA SecurID enables organizations of all sizes to mitigate identity risk and maintain compliance without impeding user productivity. It ensures users have appropriate access and confirms they are who they say they are with a modern, convenient user experience. In addition, RSA SecurID provides unified visibility and control across organizations’ many islands of identity. RSA SecurID marries multi-factor authentication with identity governance and lifecycle controls to address the security challenges associated with delivering convenient access to dynamic user populations across complex environments. It evaluates risk and business context to provide identity and access assurance. Digital transformation creates unprecedented authentication, access management and identity governance challenges for organizations. After all, more users need access to more systems from more devices than ever. RSA SecurID helps organizations address these challenges—and the identity. -
29
Quicklaunch
Quicklaunch
QuickLaunch is the #1 leader in Identity and Access Management (IAM) for Higher Education. More than 500 organizations trust QuickLaunch’s platform to manage over 2,000,000 identities and integrate over 3,000 applications worldwide. CIOs, CTOs, and CISOs use QuickLaunch IAM technologies to engage with students, faculty, and staff and protect them throughout their journey. QuickLaunch’s technology is vital in protecting the user experience, driving both operational efficiencies and higher productivity for colleges, universities, and institutions. Improves cyber security posture by protecting user accounts from being hacked and thwarting ransomware and phishing cyber attacks. Automatically provisions students from the Student Information System and employees from the Human Resources system so they can quickly get access to the apps they need when they matriculate and join.Starting Price: $0.73 per month -
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passbolt
passbolt
Finally, a password manager built for collaboration. Secure, flexible, and automation-ready. Trusted by 10,000 organizations, including Fortune 500 companies, newspapers, governments, and defense forces. Passbolt servers are designed to be simple to install and easy to manage. Yet they are enterprise-ready and can support complex setup for high availability. Passbolt can be used from your browser or mobile phone. Sharing happens in real-time. Desktop apps are coming soon. Retrieve, store and share passwords programmatically with the JSON API. Automate at scale with Passbolt CLI. Real-time access logs. Privacy is in our DNA, but also in the DNA of European laws (to make sure we don’t change our minds). Passbolt self-hosted source code comes under an AGPL license. Yes, even the commercial version. You are free to audit it, contribute to it, and redistribute it. This is why we have a healthy community of thousands of organizations in all sectors.Starting Price: €45/month/10 users