Time Sink - Time Sink helps you track how you spend your time on your Mac.
Divuni - Daily questions - A social mindfulness platform
Anti-Social - Anti-Social is a productivity application for Macs that turns off the social parts of the internet.
Notepin - Extremely simple note-taking + blogging ✍️
Strict Workflow - Enforces the Pomodoro time management technique by blocking distracting sites
A5 - Takes notes in your browser. Elegant & simple.