Project comparisons allow you to view any selection of projects side by side just like they're shown on regular categories or in search results. You can try out an example or start yourself by adding a library to the comparison via the input below. You can also easily share your current comparison with others by sending the URL of the current page.
Spin preloads your Rails environment to speed up your autotest(ish) workflow. By preloading your Rails environment for testing you don't load the same code over and over and over... Spin works best for an autotest(ish) workflow.