GanttFather Logo

GanttFather - Free Online Gantt Chart Software for Project Management

The Don of Project Management.

GanttFather is a free Gantt chart and Kanban tool for teams. Plan timelines with drag-and-drop tasks, dependencies, critical path, real-time collaboration, and Excel import/export.

Start for Free

An offer your projects can't refuse.

Everything you need to manage projects without the enterprise bloat.

Plan

  • Interactive Gantt

    Drag, drop, and conquer deadlines with precision.

  • Dependency Management

    Finish-to-Start and more. Auto-scheduling cascades dates with lag and cycle protection.

  • Critical Path Method

    Forward and backward pass. See which tasks drive your deadline — with full slack analysis.

Collaborate

  • Real-Time Sync

    Multi-user live editing. Changes broadcast the moment they happen.

  • Spectator Mode

    Share a read-only link with clients. No signup needed.

  • Version History

    Save named snapshots. Preview, restore, or undo — every change tracked.

Work

  • Kanban Boards

    Visualize your workflow. Drag tasks across columns.

  • Excel Import/Export

    Round-trip with Excel. Import plans, export reports with a diff preview.

  • REST API

    Automate projects, tasks, dependencies, and resources over HTTPS.

  • Virtual Resources

    Track equipment, rooms, and software costs alongside your team.

How does GanttFather compare to other Gantt tools?

GanttFather is the only option on this list with a permanent free tier that includes Gantt + dependencies + critical path + AI agents. The alternatives either have no free tier (Microsoft Project, GanttPRO, Smartsheet) or paywall the Timeline view and critical path (Monday.com, Asana, ClickUp). Compare each below.

See all comparisons →

Plan Projects with Interactive Gantt Charts

Create complex project schedules with ease. Visualize dependencies, set milestones, and identify critical paths to ensure on-time delivery. GanttFather provides the structural integrity your projects need.

Q1 Product Launch
Gantt List Board
#TaskStatus
1 Discovery IN PROG
AH
1.1 User Research CLOSED
JC
1.2 Wireframes IN PROG
MK
2 Backend API OPEN
LB
3 Launch ON HOLD
EP
JanFebMarApr
5 tasks · 2 critical
PP: 44% SPI 0.55

Real-Time Project Collaboration for Teams

Work together in real-time. Assign tasks, track progress, and keep everyone aligned without the need for constant meetings. Changes defined by one member are instantly visible to all.

Project Health
Live
AH
MK
JR
+5
Health
64/100
Progress
44%
PV 80% · EV 44%
SPI
0.55
−36% deviation
Diagnostic ATTENTION
Failed Kickoff Not started
144
Blockers On Hold
12
Stagnation Stuck
7

Excel Import & Export for Gantt Charts

Don't lock your data away. Import existing plans from Excel or export your Gantt charts for reporting. Your data remains yours, formatted perfectly for any stakeholder.

X
project_plan.xlsx
Import
Export
#
Task
Start
End
%
1
User Research
30/09
20/06
100%
2
Wireframes
30/09
09/05
62%
3
Backend API
30/09
09/05
28%
4
Launch
01/04
29/06
5%
5
QA Testing
19/01
06/02
0%
Sheet1 · 5 rows Round-trip · no data lost

Free Gantt chart for any team

Whatever your team — freelancer juggling clients, startup writing a Q3 roadmap, or student leading a capstone project — GanttFather's free tier gives you 1 project you own with 2 editor seats, unlimited free viewers, and every feature unlocked. Editing someone else's project is always free. No per-seat tax, no trial, no card.

For Freelancers

Unlimited free viewers, public client share links with no signup, Excel sync, no per-seat tax.

Read guide

For Startups

Flat per-project pricing that doesn't scale with headcount, native MCP server for AI agents, critical path free.

Read guide

For Students

Critical Path Method built in, eleven languages, browser-based (no install), group projects.

Read guide
See all team guides →

Model Context Protocol

Can AI agents manage your Gantt projects?

Yes. GanttFather is the first free Gantt tool with a native Model Context Protocol (MCP) server. Connect Claude Desktop, Cursor, Windsurf, or any MCP-compatible client — agents read tasks, manage dependencies, run critical-path analysis, and create projects for you. No paid add-on, no enterprise AI tier.

Works with

Claude DesktopChatGPTCursorWindsurfVS CodeGemini CLIAntigravityClaude Code
Read MCP docs
mcp_config.json 
{
  "mcpServers": {
    "ganttfather": {
      "url": "https://mcp.ganttfather.com"
    }
  }
}

REST API

Build custom workflows on top of your Gantt data.

Use the GanttFather REST API to read and update projects, tasks, dependencies, members, and resources over HTTPS. Connect internal tools, automate reporting, or script cleanup jobs with the same project data your team edits in the app.

Covers

ProjectsTasksDependenciesMembersResourcesPaginationRate limits
Read API docs
rest_api.sh 
curl https://api.ganttfather.com/v1/projects/{projectId}/tasks \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN"

Auth

Bearer token

Transport

HTTPS

Frequently asked

Frequently Asked Questions

Answers to the most common questions about GanttFather.

Is GanttFather really free?

Yes, the Free plan is 100% free forever. It includes 1 project you own with 2 editor seats and unlimited free viewers and guests, plus every feature — interactive Gantt, Kanban, dependencies, and critical path. Editing a project someone else owns is always free, too.

Can I integrate artificial intelligence into my projects?

Absolutely! GanttFather supports the Model Context Protocol (MCP), meaning you can connect AI agents like Claude, Cursor, or Windsurf to manage tasks, assign resources, and inspect the Gantt chart for you.

Does GanttFather have an API?

Yes. GanttFather includes a REST API for projects, tasks, dependencies, members, and resources, so you can automate reporting, connect internal tools, or sync project data over HTTPS with token authentication.

What if my team already uses Excel?

We understand Excel is ubiquitous. GanttFather features two-way Excel import and export. You can start planning in Excel, import to GanttFather, make adjustments, and export back without losing data.

Is it possible to share my project with clients or stakeholders?

Yes, you can generate a "Spectator Link" (Public View) that allows external people to view the project status in real-time without needing to create an account or being able to edit the data.

Still have questions?

Drop us a line — we usually reply in under a business day.

[email protected]