Privacy-friendly alternatives to Castle
The fraud prevention software sites closest to Castle, with the fewest trackers first: what each homepage loads before you accept cookies. Castle itself loads 1 tracker.
- 01
Centinel Analytica | Bot and AI crawler protection
Centinel Analytica detects real-browser automation, residential-proxy scrapers and spoofed AI crawlers, verifies trusted bots and applies your access policy.
Uses privacy-friendly analytics. Compare with Castle →
Very close - 02
oopspam: Automate your Spam and Fraud Detection
Prevent spam and fraud before they impact your business. High accuracy. Zero data compromise.
No trackers, ad pixels or embeds on its homepage. Compare with Castle →
Very close - 03
Shodan Search Engine
Search Engine for the Internet of Things
No trackers, ad pixels or embeds on its homepage. Compare with Castle →
Very close - 04
Stripe | Financial Infrastructure to Grow Your Revenue
Stripe is a financial services platform that helps all types of businesses accept payments, build flexible billing models and manage money movement.
No trackers, ad pixels or embeds on its homepage. Compare with Castle →
Very close - 05
Fake Account & Fraud Detection Platform | Verisoul
Invisibly catch duplicate accounts, AI bots, and fraud. Customize decisions without engineering resources. Verify user identity with AI agents. All in one platform.
Uses third-party embeds, tag manager. Compare with Castle →
Very close - 06
Agentic Financial Crime Platform for Fraud Prevention & AML
The top agentic risk platform used by leading banks and merchants worldwide to stop fraud in real-time, prevent AI-driven attacks, automate fraud & AML operations
Uses tag manager. Compare with Castle →
Very close - 07
hCaptcha: Real-Time Bot Detection & Fraud Prevention
hCaptcha delivers real-time, privacy-first bot detection, AI-agent controls, account defense, and fraud prevention for websites, apps, and APIs. Book a demo.
Uses marketing and email tracking. Compare with Castle →
Very close - 08
Signifyd: Commerce Runs on Our Decisions
Protect the entire customer journey with the only decision engine built for login, checkout, returns and appeasements, backed by a guarantee.
Uses third-party embeds, tag manager. Compare with Castle →
Very close - 09
Next-Gen Digital Risk Protection | AI-powered Cybercrime Defense by Netcraft
Protect your brand with Netcraft's digital risk protection platform. We detect, disrupt and remove phishing, scams and cyber attacks with unmatched scale and effectiveness.
Uses third-party embeds, marketing and email tracking. Compare with Castle →
Very close - 10
Identity Verification Platform for AI Risk Decisioning | Socure
Socure is the leading AI-powered identity verification platform trusted by 3,000+ customers to verify consumers, businesses, & employees with confidence.
Uses tag manager. Compare with Castle →
Very close - 11
Leading Identity Verification & Intelligence Platform | Jumio
Go beyond one-time ID checks. Identity verification, risk signals, and AML screening, powered by the Jumio Identity Graph, to stop fraud and stay compliant.
Uses third-party embeds, tag manager. Compare with Castle →
Very close - 12
Behavioral AI for Email, Identity, and AI Security | Abnormal AI
Abnormal AI is a behavioral AI security platform that protects email, identity, and AI—and stops insider threats. Trusted by 5,000 organizations.
Uses tag manager. Compare with Castle →
Very close - 13
Workforce Analytics & Insider Risk Platform | Teramind
Teramind enables proactive protection against insider threats, data breaches, productivity inefficiencies, and compliance challenges.
Uses marketing and email tracking, third-party embeds. Compare with Castle →
Very close - 14
Apphud – App Monetization Platform for Subscription Apps
Trusted by 14,000+ apps. Apphud powers subscriptions, paywalls, A/B tests, LTV predictions and 20+ integrations for iOS, Android and web apps. Start free.
Uses privacy-friendly analytics, third-party embeds, visitor analytics. Compare with Castle →
Very close - 15
URL and website scanner - urlscan.io
urlscan.io - Website scanner for suspicious and malicious URLs
Uses third-party embeds, marketing and email tracking. Compare with Castle →
Very close - 16
Userlane | Software Adoption Platform for Regulated Industries
Userlane is the software adoption platform for healthcare, financial services, manufacturing, and pharma. See where applications create friction, fix it in context, and prove it worked.
Uses third-party embeds, tag manager. Compare with Castle →
Very close - 17
Build and Grow Your App Business | RevenueCat
The world’s best apps use RevenueCat to power in-app purchases, manage customer data, and grow revenue across iOS, Android, and the web.
Uses tag manager. Compare with Castle →
Very close - 18
Fraud Prevention Platform for Digital Business | Sift
Stop payment fraud, account takeover and fake accounts in real time. Sift’s AI agents and global data help 700+ brands approve more trusted customers.
Uses tag manager, marketing and email tracking, third-party embeds. Compare with Castle →
Very close - 19
Incognia | Identify Users vs. Fraudsters. Across devices.
Incognia is the leader in AI-powered cross-device risk intelligence, delivering frictionless growth and security for enterprises across consumer internet and financial services.
Uses third-party embeds, tag manager, marketing and email tracking. Compare with Castle →
Very close - 20
Kasada | Stopping Automated Threats | Web & API Protection
Kasada transcends bot management with a radical approach to defeat automated threats and online fraud. Web and API protection that lasts.
Uses marketing and email tracking. Compare with Castle →
Very close
Chosen from the Castle alternatives whose homepages we could read, closest first among those with the same number of trackers. A tag manager counts as a tracker: it loads more after you consent.