Efficient Diary is a free personal diary software for Windows. It allows you to keep a digital diary on your computer while ensuring it remains private and secure with password protection. With a traditional interface design, Efficient Diary features a folder structure on the left side to browse entries, and the right side reserved to display selected entries. The software also includes a rich-text editor, allowing you to apply text effects and insert images into your diary entries. Additionally, Efficient Diary offers a backup/restore tool for creating backup copies of your diary.

Efficient Diary allows you to organize your entries by date and in customizable groups. However, it is worth noting that the editor does not recognize web or email addresses, unlike other similar tools. Furthermore, while you can attach multimedia files as attachments, there is no support for built-in multimedia files except for photos.

Overall, Efficient Diary is a reliable and convenient option for those who prefer to keep their personal diaries on their computers. Its password protection feature ensures privacy, and the backup/restore tool provides peace of mind. If you’re looking for a personal diary software, Efficient Diary is worth considering.