JSON Schema validator. Supports drafts 4, 6, 7, 2019-09, 2020-12, OpenAPI 3.0, and OpenAPI 3.1.

ActiveModel Validation for email

Dnsruby is a pure Ruby DNS client library which implements a stub resolver. It aims to comply with all DNS RFCs, including DNSSEC NSEC3 support.

Validate email addresses against RFC 2822 and RFC 3696.

Configurable framework agnostic plain Ruby email validator. Verify email via Regex, DNS, SMTP and even more.

The EmailAddress Gem to work with and validate email addresses.

Add some nice ActiveModel/ActiveRecord validators.

Zen by Aikido is an embedded Web Application Firewall that autonomously protects Ruby apps against common and critical attacks.

💎 Ruby DNS mock. Mimic any DNS records for your test environment and even more.

Ruby API for the minFraud Score, Insights, Factors, and Report Transactions services

String Tools

Manage your keys, requests and certificates.

A library to extract information about top-level domain and registered name from generic and international domain names

Ruby implementation of the KDL Document Language Spec

Some nice Rails enhancements for nine.ch apps. A real bonanza!

Easily convert any string and replace with links and embedded content from a long list of providers and libraries.

Gem which provide simple way to control DNS records.

A command line utility for easily determining domain name availability.

Use this command line tool to find homograph attacks.

Gem from imperituroard for different actions