AuthKong Alternatives

Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.

GeeTest protects your websites, mobile Apps and APIs from bot threats.

freemium

PureVPN is a premium VPN service provider. As one of the first movers in the cybersecurity network, we provide you with the tools, services and knowledge to be the best version of yourself online.

Visit website paid $42.25 / Monthly (5 Business VPN Accounts -10 Multi-Logins, 2000+ Servers, 24/7 CS)

Enterprise Captcha solutions

reCAPTCHA is a free security service that protects your websites from spam and abuse.

DataDome provides innovative technology and human expertise to block bad bots.

Solve Media's cost per engagement platform offers advertisers branded CAPTCHA and skippable Pre-Roll while providing publishers with enhanced security and a new revenue solution.

PerimeterX Bot Defender prevents automated attacks by detecting and protecting against malicious web and mobile behavior.

UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect...

Arkose Labs fraud and abuse prevention platform delivers long-term protection against all forms of abuse by sabotaging attackers' ROI.

ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.

Open Source free

A plugin to make the process of creating a negative captcha in Rails much less painful

the modern spam protection

Open Source

Akismet is a spam fighting service that protects millions of WordPress sites from comment and contact form spam.