AlterNote is a free, open-source alternative implementation of the Evernote web client. It offers additional functionality that is missing from the web client. You can view and edit HTML block elements and source code. You can insert footnotes, sidebars, and lists. You can create local backup copies of notes and save them in the app. You can edit image properties, including rotation. You can customize table and list formats. You can collapse nested lists. You can insert current date and time. You can change the case of selected text. You can insert quick links to other notes. You can specify the editor's default dimensions and base font/colors.