Taglish

Taglish is yet another tagging library for Rails. It borrows heavily from acts-as-taggable-on, but it has a different feature set, the reflection stuff is refactored for greater comprehension, and it aims to remove acts-as-taggable-on's memory leaks. It is also faster for large tag sets. Its major new feature is support for "scored" tags, so a model can have tags like ruby:9, sql:5, js:4.

It is still in heavy development, so lots of things are changing and I don't make any promises.