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.

Nikatime - A Slackbot that keeps track of what your team is doing so you don't have to.

My Notes Keeper - Home Of My Notes Keeper - My Notes Keeper is the premier note/outliner application for Windows 9x/2000/XP/NT. It allows you to store all of your notes and information in an easy-to-use outline, where you can quickly find what you need.

Exstora - Built-in quick note: save ideas, contacts, interesting facts

CherryTree - A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

OneNote Online - OneNote Online, part of Office Online, is the online version of Microsoft OneNote.