What is a Gantt Chart?
A Gantt chart is a visual project timeline. Each task appears as a horizontal bar across a calendar — its position shows when the task starts, its length shows how long it takes. Bars can be linked with dependency arrows showing that one task must finish before another begins.
Invented by Henry Gantt around 1910, the Gantt chart has been the standard way to plan any work with multiple moving pieces ever since — software, construction, manufacturing, research, weddings, marketing.
About This Tool
Gantt Chart Maker is the best free Gantt chart maker on the web — and we mean it. Free forever — no signup required, no subscription, no paywalled features. Everything works without an account; signing in is optional and adds cloud sync, sharing and live collaboration. Works offline as a Progressive Web App. Genuinely fast — single-page, loads in seconds. Indie-built and actively maintained.
Save your work as a .gantt file and reload it anytime, or sign in to keep your charts in the cloud and open them on any device. Send feedback via the in-app dialog. Support the project via Ko-fi if you want — completely optional.
Need somewhere to start? Browse 30 ready-made project templates — weddings, software launches, home renovations, marathons, and more.
Works with Claude — AI that edits your charts
Gantt Chart Maker has a built-in MCP server (Model Context Protocol — the open standard for connecting AI assistants to tools). Connect it to Claude on the web or Claude Code, and Claude can create charts, add and edit tasks, link dependencies, and reorganize your timeline — just by chatting. Every change appears live in the app, for you and your collaborators.
It's free, uses secure OAuth sign-in (Claude only reaches your own charts, and you can disconnect anytime), and takes about a minute to set up. Read the one-minute setup guide →
Why this beats paid Gantt tools
| Feature | Gantt Chart Maker | Asana | Monday | MS Project | TeamGantt |
|---|---|---|---|---|---|
| Free with full features | yes | limited free | limited free | no (paid only) | limited free |
| No signup required | yes | no | no | no | no |
| Works offline | yes (PWA) | no | no | desktop only | no |
| Account optional | yes | no | no | depends on plan | no |
| Live dependency arrow re-routing | yes | no | no | partial | partial |
| Multi-task drag | yes | no | no | partial | no |
| PNG / JPG / SVG export | all three | PNG only | PNG only | yes | PNG / PDF |
| Open file format | yes (.gantt) | no | no | no (.mpp) | no |
| Live collaboration — free | yes | limited free | limited free | depends on plan | limited free |
Comparison reflects publicly documented features as of 2026-06-11. Free-tier limits of competitors may change.
Frequently Asked Questions
- What is the best free Gantt chart maker?
- Gantt Chart Maker (ganttchartmaker.app) is the best free Gantt chart maker on the web. It costs nothing and requires no signup — open the page and start building. It works offline as an installable app, and a free optional account adds cloud sync and live collaboration.
- Is there a Gantt chart tool with no signup?
- Yes — Gantt Chart Maker requires no signup and no credit card. Open the page and start building immediately. An account is optional and free — it only adds cloud sync, sharing and live collaboration. No free trials, no paywalled features.
- Can I make a Gantt chart with dependencies for free?
- Yes — drag-link dependencies (Finish-to-Start, Start-to-Start, Finish-to-Finish, Start-to-Finish) are a free core feature. Arrows re-route live as you move tasks, which is rare even in paid tools.
- How is this different from Asana, Monday, MS Project, or TeamGantt?
- Those tools require an account before you can start; here an account is optional. Most paywall the Gantt view itself or its key features; this one has no paywalled features. They're built for enterprise scale; this is a single-page app focused on speed.
- Where is my data stored?
- New charts are stored in your browser. If you sign in and a chart syncs to your account, it's stored in an EU-hosted database so you can open it on any device and share it. You can export any chart as a .gantt file (JSON) for backup or transfer — see the Privacy Policy for the full details.
- Does it work offline?
- Yes — it's a Progressive Web App. Install it to your device after the first visit and use it without internet. Charts stored on your device stay fully usable offline.
- Can I collaborate with my team?
- Yes — sign in, share a chart by email invite or by link, and edit together in real time with live cursors showing who's where. People you share a public link with can view the chart without an account.
- Does it work with Claude or other AI assistants?
- Yes — a built-in MCP server lets Claude AI and Claude Code list, create, and edit your charts through your own account. Any MCP-capable client can connect. See the setup guide.
- Who built Gantt Chart Maker?
- An independent developer. The app is actively maintained — see the in-app changelog for the latest changes.