Dependencies
FS, SS, FF and SF links with lead or lag, and cycle protection built in.
GanttFather
The Don of Project Management
Real scheduling power, without the learning curve.
Dependencies, critical path, live collaboration, Kanban, Excel and AI agents — all a click away, none of it in your way. No workspace to configure before you can plan.
- Free forever tier
- No credit card
- Unlimited free viewers
- 11 languages
#Task
JanFebMar
1Discovery
1.1User research
1.2Wireframes
2Backend API
2.1Integration
3Launch
Product
Deep where it counts. Quiet everywhere else.
One project, four ways to look at it — and the scheduling engine underneath doing the arithmetic.
The timeline does the arithmetic
Drag a bar and every dependent task moves with it. Finish-to-Start and the other three link types, lead and lag, cycle protection, and a full forward and backward pass for the critical path.
- Auto-scheduling with cascade
- Critical path and slack analysis
- Unlimited hierarchy with rollups
Critical path
Full CPM with slack analysis — see which tasks own your deadline.
Live collaboration
Cursors, presence and instant sync. Spectator links need no signup.
Excel round-trip
Import and export .xlsx with a diff preview before anything is written.
AI agents & API
19 MCP tools for Claude, Cursor and Windsurf, plus a REST API.
Version history
Named snapshots you can preview as a ghost overlay, then restore.
Compare
Less tool. More schedule.
Four things the others put behind a paid tier. All free here.
Full comparisons →On the free planUsAsanaClickUpMS Project
Task dependencies✓PaidPaidPaid
Critical path + slack✓PaidPaidPaid
Unlimited free viewers✓10 seatsPer seatPer seat
AI agents over MCP✓—Paid—
Resources
Knowledge is power.
Integrations & AI
GanttFather API Reference: Automate Your Gantt Projects with REST
Create tasks, update timelines and sync resources from scripts and AI workflows.
Jul 6 · 9 minCompareAsana vs ClickUp 2026: Which Project Tool Wins?
Pricing, Gantt, dependencies and automations — plus when a third option wins.
Jun 28 · 11 minMethodologyCritical Path Method: the forward and backward pass, explained
How slack is calculated, why the critical path moves, and what to do when it does.
Jun 14 · 10 minIs GanttFather really free?
Yes. The free plan includes 1 project you own with 2 editor seats and unlimited free viewers and guests, plus every feature — Gantt, Kanban, dependencies, critical path, Excel and AI agents. Editing a project someone else owns is always free too.
What exactly am I paying for, then?
Capacity, never features. Extra projects you own and extra editor seats — that is the whole price list. Full numbers are on the pricing page.
How long until I have a working plan?
About a minute from a template, or a few minutes from an Excel import. There is no workspace to configure, no permissions matrix, and no onboarding checklist to finish first.
Can I connect AI agents to my projects?
Yes. GanttFather speaks the Model Context Protocol, so Claude, Cursor, VS Code and Windsurf can create tasks, assign resources and read the Gantt chart directly. There is also a REST API with bearer-token auth.
Can I share a project with a client?
Generate a spectator link. External viewers see live project status in the browser without an account and without any ability to edit.
An offer your projects can't refuse.
Free forever for your first project — every feature included, no card, no trial clock.