TreePad VS Foldout

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.

Workflowy - A better way to organize your mind.

OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.

CherryTree - A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

Outspline - Extensible outliner and personal time organizer to manage todo lists, schedule tasks, remind events.