Box.Net is on a mission to increase adoption of its file storage service with consumers. After successful adoption of its service with enterprise customers, it is clearly determined to woo mobile device owners by providing them with large amounts of free space (50GB!). To make it easier, it is partnering with device manufacturers like LG to provide the free space seamlessly via the Box.net API.
Transloadit offers media upload, modification, and storage as a service for developers who need that functionality (or, as Transloadit's homepage puts it, "geeks who run web or mobile applications") but don't want to worry about it themselves. There aren't too many moving parts to it, but they're ones a lot of applications make use of. The Transloadit API's main functions include: file upload, image resizing, video file encoding, image thumbnail creations, and file storage on Amazon S3.