JSON Schema is the vocabulary for ensuring JSON data consistency, validity, and interoperability across systems through defining precise validation rules.

Mailgun is a transactional email API service for developers to send, receive, and track emails.

GeoTrust provides flexible, affordable TLS/SSL certificates for website security, backed by DigiCert's industry-leading support and validation.

CircleCI is a continuous integration/continuous delivery (CI/CD) platform that provides autonomous validation and intelligent automation for modern software teams.

SonarSource provides SonarQube for ultimate static code analysis, ensuring code quality and security against bugs and vulnerabilities for developers.

RevenueCat is a subscription backend-in-a-box platform that simplifies in-app purchases, receipt validation, and revenue growth across mobile and web.

The CA/Browser Forum is a voluntary gathering of Certificate Issuers and browser suppliers defining baseline requirements for securing the web via digital certificates.

IBAN validation and calculation service for banking and finance

The NMC is the independent regulator for nurses, midwives, and nursing associates, maintaining the UK register for safe and effective practice.

Easypromos is a SaaS platform for creating interactive digital contests, giveaways, and games to capture leads and boost social media engagement.

Internet.nl is a free diagnostic tool to test website and email compliance with modern internet standards like IPv6, DNSSEC, and HTTPS.

ZeroBounce is a top-tier email validation and list cleaning service that guarantees 99.6% accuracy to boost email deliverability and open rates for businesses.

Pydantic is a data validation, observability (Logfire), and AI agent framework for Python, TypeScript, and Rust, enabling robust application development.

Clearout is an AI-powered platform for email validation, email finder, and sales prospecting, helping businesses improve deliverability and generate quality B2B leads.

HireVue is an AI-powered hiring platform offering video interviewing, skill validation, and assessments to help companies predict job success and build stronger teams.

Zod is a TypeScript validation library for data validation and type safety.

Founder Institute is the world's largest pre-seed startup accelerator, helping founders raise funding, get traction, and build fundable businesses globally.

DataFeedWatch is a data feed management platform that helps eCommerce businesses optimize product feeds for 2000+ channels to improve ROAS and campaign performance.

Loqate is a data validation and geocoding service for address verification and data quality.

AdonisJS is a TypeScript-first, fully featured web framework for Node.js, used for building robust web apps and API servers quickly.

ProctorU (now Meazure Learning) provides advanced online exam proctoring and assessment technology solutions backed by human validation.

React hook for form validation without the hassle

Pentest-Tools.com is a comprehensive penetration testing toolkit for security teams and consultants, automating scanning, exploitation, and report generation.

SSLs.com is a provider of cheap SSL certificates, offering Domain, Organization, and Extended Validation options for website security and SEO boost.