This gem provides the jQuery plugin jquery-treeview for your Rails 3.1 application.

Tree structures for ActiveRecord

DataMapper plugin allowing the creation of tree structures from data models

Generate CCN Treemap based on saikuro analysis

Tree data structure for storing segments. It allows querying which of the stored segments contain a given point.

Format your RSpec dots like a christmas tree!

Model gets: root, siblings, ancestors, descendants and other methods for tree navigation

Fully featured tree implementation for Mongoid using materialized paths and relative associations. Featuring Depth and Breadth first search.

A Ruby Gem implementation of Bitcoin HD Wallets

The Ruby Language Toolkit provides classes for creating context-free grammars, lexers, parsers, and abstract syntax trees.

SortableTree provides sorting of lists and hierarchies from ActiveAdmin index views.

lists files and directories in git as a tree

hierarchy-tree is a gem that shows the whole hierarchy and the associations related to a desired class.

svn_wc_tree provides an Web Application Front End GUI to a working copy of an remote SVN Repository.

This gem lets you manage partitioned tree structures or graphs using PostgreSQL as data store

Generates a tree representing the branches or revisions to a set of HTML files

This is a filetree, written with Backbone. It is meant to be tree that will update your file nodes live and sort them when the node state is changed.

Mutliple snapshot hierarchical tree implementation of adjacency list using recursive query of Postgresql

Allows you to create tree structures with ActiveRecord

Allows ActiveRecord Models to be easily structured as a tree