Jarbs: They took 'em.

jartools provides a busybox of command-line tools for examining the contents and metadata of java archive files (JARs and WARs).

Provides access to the package, protected, and public fields and methods of the classes passed to it together with a list of all outgoing references.

A command line tool to help developing Joomla Extensions.

Jekyll generator for creating tar and zip files.

Jekyll tag plugin that lists the names and contents of each entry in a tar file.

Browse packages of a F-Droid repository.

Jekyll plugin that automatically downloads your webfont from Fontello.

Gem for managing tasks in CI

Jetel - Custom made ETL for specific needs

High-level library for working with the Jing Dong Foundry API.

Uses fully resolved dependencies to get and start software from central repos

JpAddress is simple japan-zipcode-address-search API. You can load master-data from JapanPost and mount address-search-api to your rails application.

A Rails gem that provides Japanese address completion and validation based on Japan Post postal code CSV data. Supports address lookup by postal code, prefix search, and address/postal code consistency validation.

Integrates jquery-raty into the Rails 3 asset pipeline.

A command line tool for downloading and unzipping all the basic jar files of the slick2d library.

Kinda like warbler, except WAR-only and contained in a single Rakefile.

JScrambler helps you keep your applications safe and less vulnerable to fraud or any other attacks.

Produce a zip archive from a large number of parts, in smaller batches.

Kabosu provides Ruby bindings for sudachi.rs, a Rust implementation of the Sudachi Japanese morphological analyzer.