Jarnal - Jarnal is an open-source application for notetaking, sketching, keeping a journal, making a...
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
GoodNotes - GoodNotes lets you take notes and annotate PDF documents.
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.
Stylus Labs Write - Write is a word processor for handwriting, designed primarily for tablets with an active stylus.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.