Vivisector helps you see inside your apps, specifically so that designers can be part of a QA / Continuous Integration process. It's a framework to help you compare design 'master' images to actual screenshots from various implementations.

CSS 組版エンジン Vivliostyle をコアに据え、前処理（QueryStream 展開・画像最適化・クロスリファレンス）からビルド、後処理（PDF しおり・表紙結合・圧縮）まで、執筆から入稿に至る工程を自動化する CLI ツールです。閲覧用・印刷入稿用 PDF に加え、Kobo / Apple Books 向けのクリーン EPUB と Amazon Kindle 向けの KPF を出力できます。

Provides PDF outline extraction, precision page numbering, and OCR via HexaPDF. AGPL-3.0 licensed.

Library to rename files from Vixen, Blacked, BlackedRaw, Tushy, TushyRaw and Deeper.

Vizualize MagLev

Simple and fast static site generator

Vizier helps you present the right information to your users. By using policies and configurable defaults, it becomes easier to build presenters and be sure that model objects are wrapped in presenters when they are delivered to view templates.

A toolkit for making custom visualizations for exploratory data analysis (currently a work in progress)

VizReview SDK for Ruby. Easy integration of visual regression testing.

Easy performance analytics for your Rack/Rails app!

Wrapper for calling vk.com API from vk.com application servers and sites using vk.com API

easy api for vk

Integration with Vkontakte API

Gem for parsing vk.com group members for rails and others.

Send vcalendar invites to Khal

vkill'gems public methods

Library to work with VK API and create simple longpoll bot for group.

VKPD searches for music files on russian social network vk.com and adds/plays it with MPD.

A library that sucks... validation errors into an accumulator.

Levenshtein matching algorithm for ruby using C with an FFI extension