Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Agenda - A date-focused note taking app for both planning and documenting your projects.
Sketch - Professional digital design for Mac.
Notepin - Extremely simple note-taking + blogging ✍️
Invision - Prototyping and collaboration for design teams
Bear - Bear.app is a note-taking and content writing app that helps you boost productivity with its intuitive tools.