Basket - A note taking application for KDE. Lots of features.
Standard Notes - A safe place for your notes, thoughts, and life's work
Pocket - When you find something you want to view later, put it in Pocket.
ShoveBox - A Totally Random Web
wallabag - Save the web, freely.
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.