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Productivity Tools

Gantt Studio

Plan visually. Edit as Mermaid.

Drag a schedule into place, draw dependencies and see the critical path. Switch to Mermaid text without losing the plan. Everything stays in your browser.

Source11 stars on GitHub(opens in a new tab)Live demo(opens in a new tab)
Role
Creator & Maintainer
Period
2026 – 2026.11
Status
Completed
Theme
Web apps & extensions
Gantt Studio, screenshot 1

Overview

A browser-only Gantt editor with visual scheduling and two-way Mermaid editing. Tasks, dependencies, baselines and working-day calendars live in localStorage. It needs no account or backend and exports PNG, Excel and JSON.

Features

  • Drag tasks, resize durations and draw dependencies
  • Two-way Mermaid editing with metadata preserved
  • Automatic scheduling, critical path and baselines
  • Keyboard controls and four interface languages
  • PNG, Excel and JSON export
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