1. A method for access to a folder structure, the method comprising: causing to display a user interface on a first device and display a user interface on a second device, wherein each of the user interfaces comprises a hierarchical list to represent in a reduced form the folder structure in a storage, and each of the hierarchical lists is created by a server for a user session associated with the each of the first and second devices, wherein each of the displayed hierarchical lists is navigated for access to at least a first folder in the folder structure; and updating the folder structure and updating the hierarchical list in the user interface displayed on the first device to reflect the updated folder structure in response to a first user via the hierarchical list displayed on the first device making a change to the first folder, wherein the hierarchical list in the user interface displayed on the second device is also updated in response to a second user through the hierarchical list displayed on the second device access to the changed first folder in the folder structure.