Typed_tags is a project mainly written in PHP, it's free.
Croogo Plugin for adding Tags in a node by typing them into a text area
Croogo Plugin for adding Tags in a node by typing them into a text area.
Requires Croogo 1.3.2 or above.
Use the TypedTags tab when adding or editing a node to add tags.
Tags must be (only) comma separated.
Taxonomies and terms are used if they exist and created if they don't.
Ignore spaces after commas. Currently they are taken as part of the Tag.