RedNotebook is an open source diary and journal software for Linux, Windows and Mac.

FCorp My Calendar is a free software to manage a diary, notes, schedules, birthdays, etc.

Penzu is a private online diary-hosting website.

Day One is a simple journal application for the Mac, iPhone, and iPad.

Diaro is designed to record activities, experiences, thoughts and ideas throughout a day and sync data across all your devices.

Lifeograph is an off-line and private journal and note taking application for Linux desktops and Android.

Laverna is a JavaScript note taking application with Markdown editor and encryption support.

Filmsomniac is a tool to track the movies and TV show episodes you have watched.

AllMyNotes Organizer is an outliner application for Windows, and it allows you to store all documents and notes in a single storage file.

Journey is a journal app companion that keeps your private memories for a lifetime.

Momento is a smart private journal that stays up to date effortlessly.