Tonido allows you to access and share your content directly through a web browser without uploading or worrying about storage limits. Share files, music, photos and calendar, download torrents and even manage your finances straight from your desktop. Free.
Bitnami offers a lot of useful applications that can be run from the cloud (with a subscription) or on a VirtualBox on your computer for free. I especially like this site because it has virtualized version of Learning Management Systems (LMS) like Moodle and Canvas, and Content Management Systems (CMS) like Drupal and Joomla that you can set up to play with before deciding on which to use.