It is a tool to to index & search your text based documentation system. It use solr for fulltext index.

simiple library program that loads books and allows a simple search

XKCD searchable archive for comics by keyword, id and date*. * date coming soon to a minor update near you

A LiveBlog plugin to Index previous entries to facilitate using keywords to search the LiveBlog.

Search and parse through Slack channel history with regex

Rails engine - sets I18n.locale through a best-match cascading search and builds locale_menu (Bootstrap 3+ supported).

Aggregate app notifications in one place. Search events and share access

scalable log and event management (search, archive, pipeline)

Produces SVG diagrams and a JSON index useful for search from an ArchiMate model file.

Rails plugin that adds powerful full text search capabilities to ActiveRecord models. This is a fork of the original acts_as_ferret plugin by Jens Kraemer with some minor custom ajustments.

Semantically-aware code search tool for Ruby

Meshcomplete is a Ruby on Rails engine for MeSH autocomplete search box built with jQuery UI.

Meta tags helpers for search engine optimization of Rails application

metal-archives provides an interface to search for album releases for a specific year, defaulting to the current one if none is provided.

Migemo is a tool for Japanese incremental search. It makes Japanese character regular expression from alphabet and optimize them.

Anngler is an approximate nearest neighbor search for points in n-dimensional space that are close in terms of cosine distance to a given point. The gem is built with serverless architecture in mind with Redis but it also offers a local in-memory storage.

Simple DSL for using an IndexTank search provider with Mongoid

Helpers for mongoid i.e auto increment fields, search index

A library for working with LC/MS runs. Part of mspire. Has parsers for mzXML v1, 2, and 3, mzData (currently broken) and mzML (planned). Can convert to commonly desired search output (such as mgf). Fast random access of scans, and fast reading of the entire file.

Lists Ruby objects methods by searching them in ObjectSpace and filtering them with grep.