Google Notebook Alternatives
Google Notebook was discontinued by Google, but don't worry we have compiled a list of Google Notebook Alternatives:

AllMyNotes Organizer
AllMyNotes Organizer is a multi-functional hierarchical information manager for Windows.

Umbrella Note
A Simple, Beautiful and powerful open source Application for writing and taking notes.

MemPad
MemPad is a plain text outliner and note taking program with a structured index.

Slite
Slite is where modern teams write & collaborate. It’s their company wiki, meeting notes and docs in one simple place, across devices.

Tracks
Tracks is a web-based application to help you implement David Allen’s Getting Things Done.

Notable
Full-featured, open-source Markdown note app made with Electron.

Notes by Firefox
Simple, secure notepad extension that now comes with a companion app for Android.


Google Keep
Google Keep is a service provided by Google which integrates note-taking and web surfing.
Quickly capture what’s on your mind and recall it easily wherever you are. Create a checklist, enter a voice note or take a photo and annotate it. Everything you add is available instantly on all your devices – desktop and mobile.

Evernote
Evernote is a cross-platform, freemium app designed for note taking, organizing, and archiving.


QOwnNotes
Plain text notepad with markdown support and todo list manager for Linux, Mac OS X and Windows, that works together with the notes application of ownCloud