Recently I’ve changed some of my gems to use bundler in favor of jeweler. In short both make generating gemspec easier (obviously bundler can do way more than that). Actually I use bundler anyway so why have another dependency in form of jeweler? To compare both let’s take a look at how they work for us. We’ll use jeweler 1.5.2 and bundler 1.0.7. Creating files structure $ jeweler mygem create .gi