Course management software (CMS) allows teachers to deliver content electronically and manage collaborative coursework, either blending with face-to-face interactions or as the core of an entirely virtual classroom environment. CMS often takes the form of an electronic storehouse of course materials with which students can interact, a virtual space where students can upload assignments and projects, or both. "Dropbox" software offers a nimble alternative to larger CMS products such as Blackboard along with greater autonomy for individual instructors. Teachers working in less-traditional settings may appreciate "Dropbox's" mobility and flexibility, while shrinking budgets and less-reliable institutional support in general may add to the appeal of leaner software options.