This gem provides request authentication via [HMAC](http://en.wikipedia.org/wiki/Hmac). The main usage is request based, noninteractive authentication for API implementations. Two strategies are supported that differ mainly in how the authentication information is transferred to the server: One header-based authentication method and one query-based. The authentication scheme is in some parts based on ideas laid out in this article and the following discussion: http://broadcast.oreilly.com/2009/12/principles-for-standardized-rest-authentication.html The gem also provides a small helper class that can be used to generate request signatures.

A Ruby interface to WhatsApp Enterprise API.

A Rails grid plugin to create grids with sorting, pagination, and filters generated automatically based on column types. The contents of the cell are up for the developer, just like one does when rendering a collection via a simple table. WiceGrid automates implementation of filters, ordering, paginations, CSV export, and so on. Ruby blocks provide an elegant means for this.

Provides a wrapper to generate XML sitemaps and sitemap indexes.

Extensible Metadata Platform (XMP) parser extracts metadata from JPEG and TIFF image files. It also supports parsing raw XML files containing XMP.

A Ruby wrapper for accessing Yammer's REST API

YardJunk is structured logger/error validator plugin for YARD documentation gem.

Description of Connect.

A Ruby client library for ably.io realtime messaging

ActionSubscriber is a DSL that allows a rails app to consume messages from a RabbitMQ broker.

A custom validation for your Active Model that check if an array is included in another one

ActiveRecordDistinctOn adds support for `DISTINCT ON` to ActiveRecord. At the time of this writing, PostgreSQL is the only database which supports this syntax; however, this gem has been written with database independence in mind so that if another Arel visitor adds support for `Arel::Nodes::DistinctOn` in the future, it should work seamlessly.

An ActiveRecord extension providing convenience methods for timestamp management.

Support for Postgres Notify/Listen

Provides a form helper to make it easy to make drag and drop file upload fields that work with Rails' Active Storage.

acts_as_account implements double entry accounting for Rails models. Your models get accounts and you can do consistent transactions between them. Since the documentation is sparse, see the transfer.feature for usage examples.

Implements the Akamai {OPEN} EdgeGrid Authentication specified by https://developer.akamai.com/introduction/Client_Auth.html

Alpaca API lets you build and trade with real-time market data for free.

Amplitude Experiment Ruby Server SDK

ActiveModel Serializers addon for eliminating N+1 queries problem from the serializers.