TiddlyWiki - a non-linear personal web notebook

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.

wikidPad - wikidPad is an application for storing thoughts, ideas, todo lists, contacts, or anything else that user can think of to write down.

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.

ATWiki - TiddlyWiki for Windows.

Zkn (Zettelkasten) - Welcome to the homepage of the Zettelkasten (slip box) for your computer.