newick-ruby provides routines for parsing newick-format phylogenetic trees.

pandoc - structured text document model / abstract syntax tree for all the world's formats

Convert Alexa requests into a tree of Ruby objects and values.

An ActsAs mixin implementing a set of trees (nested set) for ActiveRecord

An algorithm for a real time decision tree to simulate the universes creation.

OLS provides a simple interface to the EBI's Ontology Lookup Service (http://www.ebi.ac.uk/ontology-lookup/). It provides an easy lookup of ontology terms and automagically builds up ontology trees for you.

Omega is a powerful set of extensions to the basic ruby standard. Things like efficient memoization, meta-helpers, easy class tree traversal and advanced math are included.

A gem that can parse *.owl files and construct a tree and let produce a json string that can let d3js or other js libs to use it

Definitely just use the real liquid gem, forked only to use parse tree visitor on aws lambda

Use OrderTree when you need both insertion order access and nested hash path style access

Renders markup Wiki pages in the browser or generates static files. Hierarchical tree navigation for all pages is provided.

Peachy is an XML slurper that sits on top of existing XML parsers. It dynamically creates object-trees for simple integration of XML data sources.

It starts from the arbitrary page you provide and descents into the tree of links until it has either traversed all possible content on the web site or has stopped at some predefined traversal depth. It is written in Ruby and implemented as a CLI application. Based on user preference, it can outp...

This provides a command-line interface to various tools that manipulate treebanks that use the PROIEL dependency format.

PRX Access is a gem to supply authentication headers and descend the HAL hypermedia link tree on PRX's APIs.

Provide basic rational numbers for trees

==== QDox - http://qdox.codehaus.org QDox is a high speed, small footprint parser for extracting class/interface/method definitions from Java source files complete with JavaDoc @tags. It is designed to be used by active code generators or documentation tools. QDox is a Java library. Therefore th...

QuickGraph provides generic directed/undirected graph datastructures and algorithms for .Net 2.0 and up. QuickGraph comes with algorithms such as depth first seach, breath first search, A* search, shortest path, k-shortest path, maximum flow, minimum spanning tree, least common ancestors, etc... ...

Collect metadata on a directory tree of music files

Gem exposes `githl` binary that allows to perform line count / contributor at current HEAD. Running on dirty working tree will produce git errors. Binary has a couple of options: `-p` or `--path` specifies relative path, defaults to `.`; `-i` or `--include` specify included files/directories...