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Open-source projects tagged “Antispam”.

Inspect repositories, licenses, activity, and alternatives across the Antispam ecosystem.

3 projects connectedTag matches come from repository topics and catalog metadata.
ALTCHA
MIT

GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.

InfrastructureOpen-source projects grouped in this category for discovery and comparison.1 project#TypeScriptProjects tagged with this topic in the verified catalog.2 projectsGithub ActionsProjects tagged with this topic in the verified catalog.3 projectsJavaScriptProjects tagged with this topic in the verified catalog.3 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.2 self-hosted optionsreCAPTCHAProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…2 alternatives
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree2.6K1265 days ago
Alternatives toreCAPTCHAreCAPTCHAProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…2 alternatives+2
Tirreno
AGPL-3.0

tirreno is a security framework. Event tracking, threat detection, and risk scoring for any product.

Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.2 projects#PHPProjects tagged with this topic in the verified catalog.1 projectGithub ActionsProjects tagged with this topic in the verified catalog.3 projectsJavaScriptProjects tagged with this topic in the verified catalog.3 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.2 self-hosted optionsSeonProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree1.5K1745 days ago
Alternatives toSeonSeonProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
Procaptcha
Apache-2.0

Open-source, frictionless CAPTCHA and bot defense. A privacy-focused alternative to reCAPTCHA and hCaptcha.

Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.2 projects#TypeScriptProjects tagged with this topic in the verified catalog.2 projectsGithub ActionsProjects tagged with this topic in the verified catalog.3 projectsJavaScriptProjects tagged with this topic in the verified catalog.3 projectsreCAPTCHAProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…2 alternatives
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree2989Jul 15, 2026
Alternatives toreCAPTCHAreCAPTCHAProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…2 alternatives+2
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