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.
Pinterest - Pinterest is a visual discovery tool that you can use to find ideas for all your projects and interests.
Standard Notes - A safe place for your notes, thoughts, and life's work
DeviantArt - deviantART was created to entertain, inspire, and empower the artist in all of us.
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.
Juxtapost - Bookmark, share and discover all your favorite things, side-by-side.