Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation
Portugal
EU
Synthient Alternatives
Synthient is described as 'Offers cutting edge bot and fraud protection while also giving you deep insights into your visitors. Track repeat visitors, device details, and the potential risk to your platform' and is an website. There are more than 10 alternatives to Synthient, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Docker and Go (Programming Language) apps. The best Synthient alternative is Cap Captcha, which is both free and Open Source. Other great sites and apps similar to Synthient are Anubis, hCaptcha, mCaptcha and IronWall.
Alternatives list
34 Cap Captcha alternatives
53 Anubis alternativesApplies sha256 proof-of-work challenges to incoming HTTP requests, targeting AI crawlers, bots that ignore robots.txt, and automated scrapers, protecting server resources and preventing unwanted search engine indexing for privacy-focused sites.
Cost / License
- Free Personal
- Open Source (MIT)
Application types
Platforms
- Self-Hosted
- Go (Programming Language)
- Docker
Anti-Fraud Solutions and top-tier IP Intelligence including Bot Detection, Chargeback Prevention, Click Fraud Monitoring, User Reputation Scoring, Transaction Scoring, and Email Validation.
Cost / License
- Paid
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
DataDome is the only bot protection solution delivered as-a-service. Unlike competing products, it requires no architecture changes or DNS rerouting, and will never be a single point of failure.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Windows
- Linux
- Software as a Service (SaaS)
23 ProxyCheck.io alternativesproxycheck.io is a premium Proxy and VPN detection API with a full featured free plan.
SaaS software with APIs that allows you to get to understand your users and prevent unwanted behavior. Block scraping, adblocks, bots, VPN users and enable building analytics tools with our APIs.
Cost / License
- Freemium
- Proprietary
Platforms
- Software as a Service (SaaS)
- Online
22 OverpoweredJS alternativesOverpoweredJS is a browser fingerprinting API designed to identify and track browser instances. It helps website operators distinguish unique users, detect potential bots and enhance website security. Supports all modern browsers, including Chromium-based browsers (Google...
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
Fraud detection and prevention using browser fingerprinting with 99.5% accuracy. Stops account sharing, payment processing fraud and gaming.
Cost / License
- Paid
- Open Source (MIT)
Platforms
- Software as a Service (SaaS)
Memcyco provides real-time digital impersonation, phishing and ATO protection for scam-targeted industries and enterprises.
Cost / License
- Paid
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
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