Spree Essentials provides a base for several other Spree Commerce extensions. The idea is to provide other extensions with common functionality such as an asset-upload interface, a markdown editor, and a common admin-navigation tab.

Load CSS and JS faster. Minifies, bundles, and optimizes CSS/JS assets ahead of time (e.g., on deploy), not at runtime. Loads popular third-party JS (like jQuery, YUI, and Dojo) from localhost in development, and auto-switches to Google's CDN in production. Lets you switch on LABjs mode to load more scripts in parallel. Can rewrite stylesheets to use CDN hosts (not just your web server) and cache-busting hashes for updated images.

Centralized logging for rails apps using MongoDB. The idea and the core code is from http://github.com/peburrows/central_logger

Integração com a cielo

Simple dsl for defining how to calculate how complete a model instance is (similar to LinkedIn profile completeness)

Ruby port of Latent Dirichlet Allocation by David M. Blei. See http://www.cs.princeton.edu/~blei/lda-c/.

Use this gem to access New Relic application information via a REST api

If you need to do read and write binary data, there is of course <Array::pack and String::unpack\n The packable library makes (un)packing nicer, smarter and more powerful.\n

Pagar.me's ruby gem

Test::Unit support for resque job queueing

SendWithUs.com Ruby Client

A suite for basic and advanced statistics on Ruby. Tested on CRuby 1.9.3, 2.0.0 and 2.1.1. See `.travis.yml` for more information. Include: - Descriptive statistics: frequencies, median, mean, standard error, skew, kurtosis (and many others). - Correlations: Pearson's r, Spearman's rank correlation (rho), point biserial, tau a, tau b and gamma. Tetrachoric and Polychoric correlation provides by statsample-bivariate-extension gem. - Intra-class correlation - Anova: generic and vector-based One-way ANOVA and Two-way ANOVA, with contrasts for One-way ANOVA. - Tests: F, T, Levene, U-Mannwhitney. - Regression: Simple, Multiple (OLS), Probit and Logit - Factorial Analysis: Extraction (PCA and Principal Axis), Rotation (Varimax, Equimax, Quartimax) and Parallel Analysis and Velicer's MAP test, for estimation of number of factors. - Reliability analysis for simple scale and a DSL to easily analyze multiple scales using factor analysis and correlations, if you want it. - Dominance Analysis, with multivariate dependent and bootstrap (Azen &amp; Budescu) - Sample calculation related formulas - Structural Equation Modeling (SEM), using R libraries +sem+ and +OpenMx+ - Creates reports on text, html and rtf, using ReportBuilder gem - Graphics: Histogram, Boxplot and Scatterplot.

A Sunspot wrapper for Mongoid that is like sunspot_rails.

Standalone rack app to manage files onbehalf of your app

http://www.mikeperham.com/2010/04/28/bayes_motel-bayesian-classification-for-ruby/

BigSitemap is a Sitemapgenerator suitable for applications with greater than 50,000 URLs. It splits large Sitemaps into multiple files, gzips the files to minimize bandwidth usage, batches database queries to minimize memory usage, supports increment updates, can be set up with just a few lines of code and is compatible with just about any framework.

An awesome, flexible, powerful, useful, tricky and liar Rails 3 recommendations engine.

A RESTful video encoder which you can use as either a front-end to ffmpeg or headless on a server.

Lets you read from the Google Contacts API. Posting to come later.

Ruby bindings for the Mapbox API