Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Journey - A diary that keeps your private memories forever.
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Diaro - Multiplatform online diary and mobile app designed to record your activities, experiences, thoughts and ideas. Join now for free and keep your secret diary or diet, travel or life journal securely.
Standard Notes - A safe place for your notes, thoughts, and life's work