Trilium Notes - Trilium Notes is a hierarchical note taking application.
Agenda - A date-focused note taking app for both planning and documenting your projects.
Learn Swift - Screencasts & code examples to learn Apple’s new Swift
Notepin - Extremely simple note-taking + blogging ✍️
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Bear - Bear.app is a note-taking and content writing app that helps you boost productivity with its intuitive tools.