PUBLIC MARKS with tags corpus & "open source"

VoxForge was set up to collect transcribed speech for use with Free and Open Source Speech Recognition Engines. We will categorize and make available all submitted audio files under the GPL license, and then 'compile' them into Acoustic Models for use with Open Source Speech Recognition engines such as Sphinx, ISIP, HTK, and Julius.

The Natural Language Toolkit is a suite of Python packages and data for natural language processing; it comes with extensive API documentation and tutorials. NLTK-Lite is the version under active development.