Side by side
Diagramium vs GanttFlow
Both stand on gantt chart software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
Diagramium supports schedule creation and step-by-step presentations, with several exports available to guests. Export charts you want to keep, since clearing site data can remove locally stored diagrams.
Visit Diagramium Free plan Web
GanttFlow focuses on making shareable timelines, with exports and chart editing at its core. Consider its single-person account model and lack of broader project-management functions before choosing it.
Visit GanttFlowThe facts
| Diagramium | GanttFlow | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Web |
| Lowest paid plan | Free or on request | Pro: C$99 a year |
| Plans published | 2 | 4 |
| Maker | Not published | Not published |
| Website | diagramium.com | ganttflow.ca |
| On gantt chart software | #4 of 46 | #8 of 46 |
Diagramium: what it does well
- Charts include dependencies and milestones
- Daily, weekly, and monthly time scales
- Works offline after the editor loads
- PNG, SVG, and PDF exports need no account
- Charts stay in browser storage
What to know first
- Clearing site data can erase unexported charts
- Animated exports require a free Google sign-in
- Account creation has a minimum age requirement
GanttFlow: what it does well
- Drag-and-resize task bars, dependencies, and milestones.
- PNG export is available on every plan.
- Pro and Lifetime include PDF and JSON export.
- Export viewers do not need an account.
What to know first
- Free plan is limited to one browser-saved project.
- Free PNG exports are watermarked.
- No ticketing, resource management, or time tracking.
- An account is for one person.
Alternatives to Diagramium Alternatives to GanttFlow The whole list

