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.

Supernotes - The fastest way to take notes and collaborate with friends. Create notecards with Markdown, LaTeX, images, emojis and more. Get started for free!

KeepNote - KeepNote: note-taking and organization.

KnowledgeBase - An AI-powered knowledge base software, that helps you organize your company knowledge, empower support agents and provide a self-service help center for your customers.

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.

Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.