Top 10 Castle Alternatives & Competitors

Top 10 Alternatives to Castle Recently Reviewed By G2 Community

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SEON. Fraud Fighters
By SEON. Fraud Fighters
4.6/5
(352)
Product Description
SEON helps businesses detect fraud, uncover risk, and stay compliant—without slowing down growth. Our single API analyzes digital footprints, devices, and AML data using 900+ real-time, first-party signals. Teams can use machine learning or custom rules, expand globally in weeks, and automate decisioning without black-box limitations or slow onboarding.
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Categories in common with Castle:
Fraud Detection
E-commerce Fraud Protection

Cisco Duo
By Cisco
4.5/5
(429)
Product Description
Duo is a cloud-based access security platform built to protect access to any application, from any device. Duo’s passwordless authentication, single sign-on (SSO) and user-friendly multi-factor authentication make secure logins easy for users, reducing friction to their workflow.
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Categories in common with Castle:
Risk-Based Authentication (RBA)

Signifyd
By Signifyd
4.6/5
(352)
Product Description
With identity and intent intelligence from the world’s largest network of online retailers, Signifyd’s Commerce Protection Platform instantly recognizes the ‘who’ behind every transaction. Every approved order is backed by a 100 percent financial guarantee against fraud and abuse, so merchants can automate payments at scale, streamline customer experiences and grow fearlessly.
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Categories in common with Castle:
Fraud Detection
E-commerce Fraud Protection
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LastPass
By LastPass
4.4/5
(1,928)
Product Description
LastPass business solutions help teams & businesses take control of their identity management with password management, single sign-on (SSO), and adaptive multifactor authentication (MFA).
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Categories in common with Castle:
Risk-Based Authentication (RBA)

1Password
By 1Password
4.6/5
(1,553)
Product Description
1Password remembers your passwords for you — and helps you make them stronger. All your secrets are secure and always available, safe behind the one password that only you know.
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Categories in common with Castle:
Risk-Based Authentication (RBA)

HAProxy
By HAProxy
4.7/5
(681)
Product Description
HAProxy One helps you manage, secure, and observe all your application traffic — in any environment — with a unified platform. The platform consists of a flexible data plane (HAProxy Enterprise and HAProxy ALOHA) for TCP, UDP, QUIC and HTTP traffic, a scalable control plane (HAProxy Fusion), and a secure edge network (HAProxy Edge), which together enable multi-cloud load balancing as a service (LBaaS), web app and API protection, API/AI gateways, Kubernetes networking, application delivery network (ADN), and end-to-end observability.
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Categories in common with Castle:
Bot Detection and Mitigation

Cloudflare Application Security and Performance
By Cloudflare, Inc.
4.5/5
(572)
Product Description
Cloudflare Application Security and Performance solutions provide performance, reliability, and security for all of your web applications and APIs, wherever they are hosted and wherever your users are.
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Categories in common with Castle:
Bot Detection and Mitigation

OneLogin
By One Identity
4.4/5
(288)
Product Description
Extend enterprise security & compliance to all public and private cloud apps with secure single sign-on (SSO), multi-factor authentication & user provisioning.
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Categories in common with Castle:
Risk-Based Authentication (RBA)

Auth0
By Okta
4.3/5
(233)
Product Description
Auth0 is a cloud service that provides a set of unified APIs and tools that enables single sign-on and user management for any application, API or IoT device, it allows connections to any identity provider from social to enterprise to custom username/password databases.
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Categories in common with Castle:
Risk-Based Authentication (RBA)

G2 Deals

Buying software just got smarter. And cheaper.

This is how G2 Deals can help you:

• Easily shop for curated – and trusted – software
• Own your own software buying journey
• Discover exclusive deals on software

See Exclusive Offers