Sane ActiveRecord tree builder

Syntax tree generator made with Ruby

AVL tree, Red black tree and Lock-free Red black tree in Ruby

This extension copies the site structure to tree.yml and provides helpers for printing parts of the tree in your middleman templates.

A Ruby implementation of the Centered Interval Tree data structure. See also: http://en.wikipedia.org/wiki/Interval_tree

A Ruby implementation of the Augmented Interval Tree data structure. See also: http://en.wikipedia.org/wiki/Interval_tree

Sort Tree or List Structures by Drag n Drop

Drop Zone is a solution to the problem of restricted sales in censored markets. The proposal is for the design of a protocol and reference client that encodes the location and a brief description of a good onto The Blockchain. Those wishing to purchase the good can search for items within a user-...

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.

display list of file paths as an interactive tree

Ruby bindings to Tree-Sitter

A basic Ruby tree implementation with an optional C extension for speed.

ActiveRecord extension for sorted adjacency lists support

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

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

A Ruby GEDCOM text file parser and producer, that produces a tree of objects from each of the GEDCOM file types and subtypes. Understands the full GEDCOM 5.5 grammar, and will handle unknown tags hierarchies as a Note class.

Port of the old, venerable ActsAsTree with a bit of a twist

Burkhard Keller Tree implementation in Ruby

Lumberjack is best summed up as a generic DSL for constructing object trees. It works great for configuration files, for generating a tree of configuration objects for later reflection or what-not. But in reality you could use it for whatever you're willing to dream up.

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