cache-with-yuicompressor
Rails JS/CSS bundle gem using YUI Compressor.
A small Ruby gem published to RubyGems in August 2010 (v0.1.2), from the pre-asset-pipeline Rails era when bundling and minification weren't yet built in. It hooked into the old :cache => "name" flag on javascript_include_tag and stylesheet_link_tag, ran YUI Compressor over the combined output, and stripped console.* calls from JS along the way.
Single-file gem packaged via Jeweler, with the YUI Compressor JAR plus Rhino and JArgs vendored in as Java assets - so the gem itself was Ruby, but a JRE was needed at runtime to invoke the bundled JARs. Installable via Gemfile, config.gem, or script/plugin install, depending on which Rails 2.x / early 3.x era you were on. A modest but real published artifact from that period.