Notepadqq - Notepadqq is a linux clone (identical application) of Notepad++
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.
Secure Notepad - Secure Notepad is a note-keeping app that saves all your sensitive documents in an encrypted form.
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.
TED Notepad - TED Notepad is a portable text editor software that deals with a large variety of text processing tools, supplemental text clipboards, high accessibility through hotkeys, and a customizable number of settings and options.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.