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

zutsu social media card