Notepad and Sticky Notes are two favorite apps when you want to note down something rather quickly. The advantage with Sticky Notes is that it autosaves – but then Notepad opens faster and simpler.

In Microsoft Excel, you can add Notes to your cells. When the cell has a note, a red indicator will appear at the corner of your cell. If you hover the cursor over the cell, the note will appear.

Apple's Notes app is often overlooked, but has newfound power. Here's how to create, edit, collaborate, and share notes from within the app. From the very basics of using Notes by yourself, to ...