Taxonomy Export | drupal.org

Taxonomy Export is a light-weight module for managing exports and imports of vocabularies and terms. Currently the following features are supported:

• Exporting vocabulary definitions
• Exporting vocabulary definitions with all terms
• Creating exports as a text string (ie: like Views and CCK's content_copy)
• Creating exports as a file
• Importing vocabulary / term definitions in install profiles, using Install Profile API, coming soon!

Currently, taxonomy imports always create new vocabularies and terms. Support for updating existing vocabularies and terms will be added soon.