the software buyer's guide
Choosing Gantt chart software
Start with how often the schedule changes and who needs to see it. Those requirements will help you decide whether a spreadsheet is enough or whether you need a tool that calculates dates from dependencies.
Compare the manual methods with scheduling software, then check which features your project needs. New to the idea? Start with what a Gantt chart is.
what you're actually buying
Calculate dates from dependencies
The manual charts in these guides display dates without scheduling dependencies. When one task waits on another, you need to update the affected dates yourself if that earlier task slips.
With dependencies and automatic scheduling, changing a task's duration updates the affected tasks, the critical path and the projected finish date. This can save repeated manual edits as the project changes.
three ways to hold a plan
Paper, spreadsheets, and scheduling tools
Compare these approaches by how they handle schedule changes, dependencies, and sharing.
| Approach | Cost | Dependencies | Reflows? | Sharing | Best for |
|---|---|---|---|---|---|
| No software (paper / whiteboard) | Free | In your head | No | A photo, at best | A tiny plan that won’t change |
| A spreadsheet you already own | Free–ish | None | No | Send the file | A short, stable plan |
| Purpose-built Gantt software | Free to try | Understood | Yes | A live link | Any plan that will move |
See the step-by-step guides: Excel, Google Sheets, PowerPoint, and templates — including what each one can't do.
When to consider a scheduling tool
Four signs you've outgrown a spreadsheet
These are signs that maintaining a spreadsheet may take more effort than setting up a scheduling tool.
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You’ve re-typed the same dates twice
If schedule changes repeatedly mean editing the same downstream dates, automatic rescheduling could save time.
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You can’t answer “so what’s the new finish date?”
When a task runs long, you need to know whether the launch date changes. A scheduling tool can calculate the effect from the task dependencies.
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More than one person needs to see the current version
If several people rely on the schedule, a shared link helps them find the current version without comparing emailed files.
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The dependencies live only in your head
If you are keeping track of task relationships separately from the chart, look for a tool that stores those dependencies with the schedule.
reading the pricing page
Features to compare
Start with dependencies and automatic rescheduling. Then check sharing, critical-path highlighting, and the steps needed to update the plan. Additional features depend on the work you manage.
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It understands dependencies
Core featureThe tool should let you record that Build waits on Design and use that relationship to calculate dates.
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It reflows when a date changes
Core featureChange a duration and check that the affected tasks move, the critical path updates, and the new finish date is clear.
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It shares as a live link
Worth havingA shared link should show the current schedule. Check whether viewers need an account and what access they receive.
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It shows the critical path
Worth havingHighlighting the longest chain of dependent tasks helps you see which delays would affect the project finish.
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It gets out of your way
Ease of useTry a typical schedule change before choosing a tool. Check how many steps it takes to update a date and share the result.
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Resource-levelling, portfolios, timesheets…
Depends on the projectResource management, portfolios, and timesheets are useful when you need to coordinate teams or report across projects. For a small schedule, check whether you need them before paying for a larger suite.
where we fit
About ganttchart.ai
We build ganttchart.ai, so this is our own product. It supports dependencies and automatic rescheduling, highlights the critical path, and shares as a live link. It does not include resource levelling or timesheets.
The one twist: instead of a form to fill in, you describe the project in a plain sentence and it draws the first chart — tasks, durations, dependencies, and milestones — in about ten seconds. That focus on a short setup is part of why we only build small software.
Common questions
Gantt chart software, answered
What is Gantt chart software?
Gantt chart software displays tasks over time and helps maintain the schedule. Features to look for include task dependencies, automatic rescheduling, critical-path highlighting, and sharing. Check which are included in the tool you are considering.
Do I actually need Gantt chart software?
For a small plan with stable dates, a spreadsheet or whiteboard may be enough. Consider scheduling software when changes require repeated manual date edits or when several people need the current version.
What is the best free Gantt chart software?
ganttchart.ai is free to try in the browser: describe your project and it generates a shareable, editable chart. Google Sheets is another option if you prefer to build the chart yourself using the methods in our guide.
Is Excel Gantt chart software?
Excel can display a Gantt chart with stacked bars or a conditional-formatting grid. The methods in our Excel guide do not reschedule tasks from dependencies, so you need to update affected dates yourself.
How much does Gantt chart software cost?
Prices range from free to enterprise subscriptions. Check the current plan details for the features and number of users you need. Larger suites may include resource management, portfolios, or timesheets that a small project does not require.
What should Gantt chart software be able to do?
Check dependency support, automatic rescheduling, critical-path highlighting, and sharing. Then consider whether the project also needs resource management, portfolio reporting, or time tracking.
Still deciding by hand? Every planning term here is defined in the plain-English glossary, and the whole cluster lives in the field guides.
Skip the shortlist
Describe your project in one plain sentence and get a shareable, editable chart — dependencies, critical path, and milestones included. Free to try, nothing to install.