The WordNet database contains all sorts of interesting relationships between words: it can categorize words into hierarchies, find the parts of an object, and answer many other interesting questions.

The code below relies on the NLTK and NetworkX libraries for Python.

VertexDB is a high performance graph database server that supports automatic garbage collection. It uses the HTTP protocol for requests and JSON for it's response data format and the API is inspired by the FUSE filesystem API plus a few extra methods for queries and queues. It's implementation is currently built on top of TokyoCabinet and libevent.

ditaa is a small command-line utility written in Java, that can convert diagrams drawn using ascii art ('drawings' that contain characters that resemble lines like | / - ), into proper bitmap graphics.

Graph representations of YUI Easing Methods

Create and share diagrams by writing sentences!

The following form calls a program written in C , that converts a grammar into syntax diagrams. The diagrams can be used for direct printing and inclusion in printable text files. Two examples for a grammar are given (a variant of the EBNF-grammar and the XPath-grammar).

matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. matplotlib can be used in python scripts, the python and ipython shell (ala matlab or mathematica), web application servers, and six graphical user interface toolkits.

This is a simple example to illustrate the use of python-graph. This should give you a feel about how the API is.

NetworkX is a Python package for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks.