Arrolio is a paged-media layout engine: it takes a content tree plus a layout spec (page templates, styles, flows) and produces a sequence of laid-out pages, which a renderer then emits — by default to PDF bytes via the sibling `pdfrb` gem. Arrolio is the middle layer of a three-library stack: * `pdfrb` — pure-Ruby PDF library (bytes <-> model). * `arrolio` — FOP-like paged layout (this gem; depends on pdfrb). * `loom` — multi-target layout compiler (separate gem; emits to Arrolio, CSS, XSL-FO, IDML). Arrolio itself owns: page templates, threaded flows, Knuth-Plass line and page breaking, tables, lists, SVG, page-model selection, running headers/footers, and the rendering pipeline. It does not own the PDF byte format (Pdfrb does) or any DSL (Loom does).

Artificial intelligence library for prompting - not production-ready.

A command line utility that converts a single AsciiDoc file to a DITA map.

Test LLM outputs with Minitest-native assertions. LLM-as-judge for faithfulness, hallucination, bias, toxicity. Deterministic assertions (contains, regex, JSON). CI-native: GitHub annotations, JUnit output, cost tracking.

Bananomia is a low-level wrapper around the Bionomia API.

Provides automated db backups for bard projects

Middleware to inject an annoying banner on every page in the staging environment

Ruby gem for easily parse data from a BigBlueButton recording's events.xml.

Beam Up is a deployment CLI for static sites that works with popular hosting providers like Netlify, AWS S3, Seal Static, statichost.eu and Hetzner. Configure it once, then deploy your site to any provider with a single command. Use it from the command line, embed it in your Ruby scripts or integrate it into your CI/CD pipeline.

bell_pepper is a low-level wrapper around the BELS API.

Blacklight Oai Provider plugin

BundleOutdatedFormatter is a command-line tool to format output of `bundle outdated`

Bok Choy is a low-level wrapper around the BHLnames API.

Search, browse, and open bookmarks from the command line. Supports Chrome, Chromium, Firefox, and Safari. With fzf installed, booker and booker <search> open a fuzzy picker over the matches - nothing to install and the same in every shell. Zsh, bash, and fish users can also add tab completion through bookmark matches. Can open websites directly or search with your preferred search engine.

Bucketrb is a lightweight local S3-compatible HTTP server backed by the filesystem.

Ruby bindings for bullet3 with a low-level API and a Ruby-friendly simulation layer.

With this gem, you can efficiently create beautiful index and form pages, and form fields with labels using the Bulma CSS library. You can also create embedded, editable multi-object subforms.

Ruby on Rails SDK/client library for Cased

Ruby client for the CashCtrl Swiss accounting software API.

An unofficial simple ccb payment connect client gem