How to minify JS and CSS in D7 without using modules One of the most promising D7 module http://drupal.org/project/advagg for minification and aggregation of CSS and JS isn't ready for production sites yet.

In such a situation which is the best option?

I also checked http://drupal.org/project/core_library but it sounds overkill.

What other good options we have inside or outside drupal?
This is actually a module, but the Speedy module minifies core JS, has a stable release, and is regularly updated.