VCard (Contact Card) parser and generator.

Add Japanese validators

Automatically adds validations to ActiveRecord models that match your database constraints

Validate specific value for Rails

Shows what a field expects before validation fails — complementary to ActiveModel errors.

validations-skipper is a gem that enables objects to skip specified validations with ease. It can be applied to ActiveRecord::Base classes.

Allows one to implement object validations without writing too much code

Ruby client for the Valor PayTech API

Provides implementation of #inspect that is more readable and can be used in irb.

A Simplified Vanitiv/WorldPay (LitleOnline) API Library

Report Processing for WorldPay/Vantiv/LitleOnline

A thin wrapper for running CloudFormation templates

This gem provides an interface to Sectigo's (formerly Comodo CA) APIs for working with SSL/TLS certificates as well as its reporting API. Support for Sectigo's other APIs (S/MIME, code signing, device certificates, etc) may be added at a later date.

Minitest adapter: one selectable test per Markdown example, with a drift gate.

Extract instance variables from ruby code.

Configuration each environments.

A VAST analyzer that autodetects VPAID, flash, and js in VAST media files

A ruby wrapper for the http://www.vast.com/ api

Basic tools for Heroku Vault's Ruby projects

vcdeps wires Microsoft's vcpkg package manager into mkmf: declare native dependencies in ext/<gem>/vcpkg.json, call Vcdeps.mkmf! from extconf.rb, and vcdeps locates (or bootstraps) vcpkg, installs the ports out of tree with the correct dynamic-CRT triplet, prepends the include/lib paths so they win over Ruby's own opt-dir, and vendors the runtime DLLs with a generated Fiddle-preload shim so the built extension actually loads. It provides a library API (install!/vendor!/baseline!/tool!), the extconf entry point Vcdeps.mkmf!, and a CLI (vcdeps doctor/where/install/vendor/ baseline/bootstrap). Manifest mode only; builds and caches live under %LOCALAPPDATA%\vcdeps, never inside the gem. Windows MSVC (mswin) Ruby only. Pure Ruby — no compiler required to install vcdeps itself.