Floating theme picker for Tailwind-based Rails apps. Ships a Stimulus controller, Slim partial, helpers, and a themes stylesheet. Persists choice in two cookies (theme, mode) so the server can paint the right classes on <html> before any JS runs — no flash of unstyled content on returning visits.

Rails telephone link helper

A notifier for Thredded to push new post notifications to the Pushover app

tilt-rails_erb adds supports ERB templates using Rails' ERB handler, which is different than standard ERB in that it supports using &lt;tt&gt;&lt;%= foo do %&gt;&lt;% end %&gt;&lt;/tt&gt; syntax and it auto-escapes output.

Allows you to build a customizable vertical timeline very easily.

A Rails engine that provides a declarative Ruby DSL for building interactive, animated D3.js charts. Offers line, bar, area, and pie charts with tooltips, legends, and responsive design out of the box.

Render one button per event the current user may perform on a record, each POSTing to a member transition route that re-authorizes server-side. Pluggable state machine and authorization backends; ships with state_machines and ActionPolicy.

For example, highlighting 'duss' in 'Düsseldorf' will actually match something.

Pure Ruby template language

Static site generator for RDF/Turtle

Server-signed Tuix identities, hosted widget delivery and Turbo lifecycle integration for Rails applications.

Zero-configuration Turbo-Stream backed dynamic forms for Rails.

Plug-in TOTP two-factor authentication (Google Authenticator–compatible) with QR setup, backup codes, and host-app session hooks.

Standalone view components for Uju

Render a partial as a layout and yield it a handle whose named slots the block fills and the partial reads back wherever it likes — for content that isn't the main body, like a card footer or a header actions row.

UI components for Rails views in the spirit of form_for. Builders for index tables (sortable, deferred, kept live by Turbo Streams), detail lists, forms, cards, page headers and loading skeletons; a Turbo Frame modal, a confirm dialog and flash toasts; menus, tabs, tooltips, local times, copy buttons, autogrowing textareas and UUID inputs as self-registering custom elements; and AI chat components — transcripts, streamed replies, tool-call timelines, plans, permission requests and a composer — kept live by Turbo Streams. Plain helpers styled with Tailwind CSS v4 (required; the host's build compiles the gem's component CSS), with no Stimulus.

A Rails engine that adds passkey registration and authentication backed by Active Record. Self-contained, pure-Ruby WebAuthn ceremonies (CBOR, COSE, attestation and assertion verification) with stateless signed challenges — no external gems.

Upkeep records the data and identity dependencies used while Rails renders a view, then updates subscribed frames when matching application data changes.

A jQuery plugin provides to display time in user's timezone.

Serializable and validatable value objects for ActiveRecord