1. A method comprising: receiving, at a computer system, multiple data files that are in a plurality of file formats from a plurality of sources, wherein the data files are uploaded to an online binder from a computing device associated with a user of a plurality of users; converting, at the computer system, the data files to a common file format; associating, by the computer system, the data files with the online binder, the online binder configured to present the data files as a plurality of pages of the online binder, the plurality pages being of the common file format; and presenting, by the computer system, the online binder to the plurality of users, the online binder configured to provide access to one or more of the users to the data files as corresponding pages of the online binder, wherein presenting the online binder includes: presenting an online collaboration service that allows, during an online session between at least a first user of the plurality of users and a second user of the plurality of users, the first user to transmit collaboration data from a first device associated with the first user to a second device associated with the second user in real-time, the collaboration data including (a) a first page of the online binder displayed on the first device and (b) user actions of the first user that are associated with the first page displayed on the first device, and presenting an online note service that allows the first user to annotate a second page of the online binder while the second page is displayed on the first device, wherein the online binder is configured to receive an annotation from the first user via a recording tool that records user actions of the first user involved in generating the annotation during a recording session, the online binder storing the annotated second page as a new page of the online binder.
13. The method of claim 1 , wherein presenting the online note service includes: receiving the annotation as at least one of a text or a drawing created on the second page.