I got tired of remembering which gems need to be updated to which versions after every security update, so I wrote a gem that scans all Gemfiles it can find and tells me which gems in which apps need to be updated. Check out the blog post: http://psionides.eu/2013/02/18/pick-holes-in-your-gemfiles/.
psionides — 2 posts
If you're using Rails asset pipeline and you wish you didn't have to add the
blocks to your asset files, check out this article: Extending asset pipeline with custom preprocessors.