jsTree is jquery plugin, that provides interactive trees. It is absolutely free, open source and distributed under the MIT license.

The RKelly library will parse JavaScript and return a parse tree.

\ Provides `rake task exceptions` or `display_exceptions` script which display the currently configured Exceptions hierarchy.

RailsAdmin Drag and drop tree view for Ancestry gem with ActiveRecord and MongoID

Tokyo Cabinet is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. There i...

bcdatabase is a tool for storing passwords and other configuration information outside of your application source tree.

An Abstract Syntax Tree for the Rubinius language platform.

DataMapper plugin allowing the creation of tree structures from data models

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

Line-tree parses indented lines of text and returns an array representing a tree structure.

Full power of Java's ANTLR 3 language recognition tool brought to Ruby. Generate lexers, parsers, tree parsers, source translators, and language analysis tools for use in Ruby applications.

Ruby & JRuby gem with a fast k-d tree C implementation using FFI bindings with support for latitude/longitude and geo distance range search

Rumale is a machine learning library in Ruby. Rumale provides machine learning algorithms with interfaces similar to Scikit-Learn in Python. Rumale supports Support Vector Machine, Logistic Regression, Ridge, Lasso, Multi-layer Perceptron, Naive Bayes, Decision Tree, Gradient Tree Boosting, Rando...

Lipsiadmin is a new revolutionary admin for your projects.Lipsiadmin is based on Ext Js 2.0. framework (with prototype adapter) and is ready for Rails 2.0. This admin is for newbie developper but also for experts, is not entirely written in javascript because the aim of developper wose build in a...

ID3-based implementation of the M.L. Decision Tree algorithm

Provides a generic tree data structure with ability to store keyed node elements in the tree. The implementation mixes in the Enumerable module.

A library for parsing equations into an abstract syntax tree for evaluation

Dolt API for serving git trees and syntax highlighted blobs

Dolt serves git trees and syntax highlighted blobs

Treequel is an LDAP toolkit for Ruby. It is intended to allow quick, easy access to LDAP directories in a manner consistent with LDAP's hierarchical, free-form nature. It's inspired by and modeled after [Sequel][sequel], a kick-ass database library. For more information on how to use it, check ...