1. Google Drive api -https://developers.google.com/drive/v1/reference/
2. Drop box Api- https://www.dropbox.com/developers
3. Box .net API link  http://developers.box.com/

Critical components are as follows:

1. Login token (Dropbox)
2. Login token( box.net or gdrive)
3. Show folder structure and indicate the source(dropbox, gdrive)
4. HTML 5 file drag and drop component
5. Dropbox integration for posting a file to dropbox
6. Dropbox search module(parsing the file name, type and source as dropbox)
7. Box.net/Gdrive integration for posting a file to dropbox
8. Box.net/Gdrive search module(parsing the file name, type and source as dropbox)
9. Integration of all the components
10. UI cosmetic changes

http://cloudgator.herokuapp.com/user/login