Tukey provides DataSets which can be put in a tree. This way you can store partial results of calculations or other data and, for example, create charts, tables or other presentations.

A Ruby library for Merkle trees

Create and track parallel inheritance hierarchies. Hook parallel hierarchies (by including a module) to automatically update/register ancestry at include and extend, or update/register only manually. Manual registration permits definitions of ancestry across, for example, instances of the same ty...

Some codes for parsing newick tree

Parses JQL strings into an abstract syntax tree (AST). Modeled after the Atlaskit @atlaskit/jql-parser grammar.

Provides treetop grammar for Vertica SQL. (Most likely works with Postgres SQL as well)

Walrat is a Parsing Expression Grammar (PEG) parser generator that creates integrated lexers, "packrat" parsers, and Abstract Syntax Tree (AST) builders.

This utility extracts all the Thread Stacks from a set of thread dump files of a WebSphere Application Server and generates a unique tree with all the threads

Extract subtrees from XML trees, making sure that the overall structure is preserved.

In Order Traversal , Pre Order Traversal , Post Order Traversal,Breadth First Traversal , Deep Search Traversal

Capistrano tasks used for common Youth Tree deployments.

A screen + vim IDE setup for editing a Rails tree

The Compass variant of the Seasons framework to style Treesaver.

Tree style Ruby object viewer (for the terminal)

Simple script to obfuscate one or more files preserving the directory tree

Safely make queries against tree data structure with ability to serialize queries for later usage

A simple decision tree prototype of modular 9 decision making.

Sort the file tree next to Xcode by file name.

Builds a dependency tree (inside out) from clusters of dependencies (outside in) in a string format with indented (2 spaces) branches.

Guard::CtagsComposer uses ctags utility and generates 2 files: tags -- with tags generated from project's source tree and vendor.tags -- with tags generated from vendor folder.