Dnote - Capture what you learn when you code everyday without switching context. Dnote is a home for your engineering microlessons.

Trilium Notes - Trilium Notes is a hierarchical note taking application.

Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.

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.

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

DASH - DASH is a secure, blockchain-based global financial network which offers private transactions.