Capybara is an integration testing tool for rack based web applications. It simulates how a user would interact with a website

Prawn is a fast, tiny, and nimble PDF generator for Ruby

Roo can access the contents of various spreadsheet files. It can handle * OpenOffice * Excelx * LibreOffice * CSV

LicenseFinder works with your package managers to find dependencies, detect the licenses of the packages in them, compare those licenses against a user-defined list of permitted licenses, and give you an actionable exception report.

A nifty gem, in pure Ruby, to parse PDF files and combine (merge) them with other PDF files, number the pages, watermark them or stamp them, create tables, add basic text objects etc` (all using the PDF file format).

Rack based split testing framework

An add-on converter for Asciidoctor that converts AsciiDoc documents to PDF using the Prawn PDF generation library.

Build LLM-backed Ruby applications with Ruby's Langchain.rb

Set of addons to help with the activeadmin ui

Roo can access the contents of various spreadsheet files. It can handle * OpenOffice * Excel * Google spreadsheets * Excelx * LibreOffice * CSV

This gem allows you to render SVG directly into a PDF using the 'prawn' gem. Since PDF is vector-based, you'll get nice scaled graphics if you use SVG instead of an image.

A general classifier module to allow Bayesian and other types of classifications.

Super simple and fast PDF invoicing in pure Ruby (based on Prawn library).

A Ruby library for text classification featuring Naive Bayes, LSI (Latent Semantic Indexing), Logistic Regression, and k-Nearest Neighbors classifiers. Includes TF-IDF vectorization, streaming/incremental training, pluggable persistence backends, thread safety, and a native C extension for fast L...

Ball Aerospace COSMOS provides all the functionality needed to send commands to and receive data from one or more embedded systems referred to as "targets". Out of the box functionality includes: Telemetry Display, Telemetry Graphing, Operational and Test Scripting, Command Se...

Machine learning for Ruby. Supports regression (linear regression) and classification (naive Bayes)

Ruby Stats is a port of the statistics libraries from PHPMath. Probability distributions include binomial, beta, and normal distributions with PDF, CDF and inverse CDF as well as Fisher's Exact Test.

Thinreports is an open source report generation tool for Ruby.

Prawn Handler for Rails. Handles and registers pdf formats.

Reckon automagically converts CSV files for use with the command-line accounting tool Ledger. It also helps you to select the correct accounts associated with the CSV data using Bayesian machine learning.