Windows Journal

Windows Journal is a note-taking application that allows users to create and organize handwritten notes and drawings and save them as  files, or export them as   files. It can be used with an ordinary computer mouse, as well as a stylus for a graphics tablet or a Tablet PC to compose a handwritten note.

Windows Journal Viewer is a slimmed down version of Windows Journal for viewing the Windows Journal file format on other systems that did not have Windows Journal.

History
Windows Journal was initially introduced in Windows XP Tablet PC Edition. It allowed the user to create and organize handwritten notes and drawings and save them as  files or export them as   files. It was designed to be used on Tablet PCs and graphics tablets using a stylus but, it could also be used with an computer mouse.

Windows Journal was discontinued and removed from the OS in Windows 10 Anniversary Update in favor of OneNote. In July 2016, Microsoft released a patch (KB3170735) for Windows 7 and Windows 8.1 to notify users about future Windows Journal developments. On 9 August 2016, Microsoft released another patch (KB3161102) to remove Windows Journal from Windows 7, Windows 8.1 and Windows 10 versions 1507 and 1511 after it was discovered that the Windows Journal file format was susceptible to security exploits.