OpenJean is described as 'PIM software, personal information manager, open source, cross-platform, organizer, address book, appointment, calendar, diary' and is a Journaling app in the office & productivity category. There are more than 10 alternatives to OpenJean, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac, BSD and Flathub apps. The best OpenJean alternative is Zim, which is both free and Open Source. Other great sites and apps similar to OpenJean are AllMyNotes Organizer, KeepNote, MyInfo and myBase.