Compatible with iOS 5, 6, 7 and 8
Common open/save-file dialog
Plus, a drop-in NSFileManager replacement for global filesystem access from within sandboxed apps
For Cydia developers only
Key features:
* Flexible and subclass-able view controller
* Straightforward API with Apple-style delegation
* Multithreaded file manager daemon _independent_ of Springboard, capable of asynchronously handling large files without crashing
* iPad/iPhone-tested
Documentation and examples here
See Safari Download Enabler for example screenshots.