Providing a website featuring technology that enables users to access a customized website for securely uploading, encrypting, downloading, backing up, renaming, deleting, restoring, organizing, and exchanging documents with other users, including clients of the user, via mobile and desktop devices; Providing a website featuring technology that enables users to securely communicate with users that are inside and outside of the user's organization, including via instant messaging; Providing a website featuring technology that enables users to access and share information and documents in the fields of tax preparation and accounting, including prior-year tax summaries, online tax organizers, and fillable forms; Providing a website featuring technology that enables users to sign documents and to make and collect payments electronically via mobile and desktop devices