With the numerous cloud-based storage services out there, there are many options where files can be stored. Users will always have their preferences and you can’t force them to use your favorite cloud-based service. Implementing integration with all these services is a mission, but DZDocumentsPickerController aims to make your life a bit easier. Check it out here. The library allows for importing file from multiple sources, such as Image Library, iTunes shared folder, and cloud services like Dropbox, Cloud App, iCloud, Google Drive, Microsoft SkyDrive, SugarSync, BOX, and many more.