zutsu

Try it now • GitHub • Blog post

ずzuつtsu is a task management web app designed to help you focus on one task at a time. The name comes from 一つhitotsuずつzutsu which means “one at a time” in 日本語Japanese.

Why?

I wanted to replace inflexible calendar events for study sessions with something simple and adaptable. No third-party apps, no cloud sync —just a focused space for task management.

Features

Core

• Task management with drag-and-drop reordering
• Timer with customizable duration for each task
• Private & offline—no accounts, tracking, or server storage
• Import/export task lists (JSON)

Utilities

• Pomodoro timer
• Activity calendar (30-day view)
• Counter & stopwatch
• Note-taking space
• Random choice makers

Quality of life

• Dark and light theme support
• Browser and sound notifications
• Keyboard shortcuts
• Responsive design