Integrated Meta Tags
There is an issue asking about duplication over at #228768. It does not appear to be a duplicate in that it uses a different methodology to generate the tags.
Nodewords
Todo: fill in description and features here
For Drupal 6
Meta tags
Todo: fill in description and features here
Drupal core: 7.x
Development status: Actively developed
Meta tags quick
Meta tags implementation based on Fields API
Every meta tag (keywords, description, copyright) is treated as a separate field. Meta tag fields are then attached to registered entities (content types, taxonomy vocabularies), and appear in the entity edit form. Pages that do not represent any entity (default front page, views etc.), are served using artificial entity 'path-based meta tags'.
Drupal core: 7.x
Stable version: 7.x-2.2
Development status: Actively developed
Supported tags: abstract, copyright, description, keywords, revisit_after, robots
Mechanism to extend supported tags: Fields API
Supported pages: All non-administrative pages
Upgrade path: Import of nodewords data (only tags listed above)
Global defaults: No
Default values: Limited (using Fields API interface)
Token support: Yes
SimpleTest: No
