The Best Open-Source Alternatives to GanttPRO
Are you looking for a free or self-hosted alternative to GanttPRO? In 2026, avoiding expensive proprietary software subscriptions is easier than ever. The open-source community has built excellent privacy-friendly tools within the Project Management ecosystem. Currently, there are 2 active replacements available, with Redmine being one of the most prominent selections.
Quick Comparison: GanttPRO vs. Open Source
Full comparison: GanttPRO vs. Redmine ā| Criteria | GanttPRO | OSS Replacements |
|---|---|---|
| Pricing model | Paid / Monthly Fees | 100% Free / Self-Hosted |
| Data Control | Third-party Servers | Full Ownership & Privacy |
| Customizability | Restricted by Vendor | Unlimited (Modify Codebase) |
Sort alternatives
Choose the metric that should define the list order.
Redmine is a highly customizable and robust project management platform that serves as an open-source alternative to GanttPRO, offering advanced features such as Gantt charts, resource allocation, and agile project management within a secure, privacy-friendly environment. It empowers users to centrally manage and track projects, fostering seamless collaboration and organization across teams.
"Gantt Project is a feature-rich, cross-platform project management tool that enables users to create, manage, and schedule tasks, milestones, and dependencies in a visual Gantt chart format, while maintaining complete control over their data and respecting user privacy. As a free and open-source alternative to commercial solutions like GanttPRO, Gantt Project offers unparalleled flexibility and customization options without compromising on functionality."
Frequently Asked Questions
What is the best open source alternative to GanttPRO?
Based on GitHub community data (including star count and fork activity), Redmine stands out as one of the most reliable open-source replacements for GanttPRO today.
Why should I use an open-source replacement instead of GanttPRO?
Switching to an open-source solution ensures complete data sovereignty, protects your software environment from sudden vendor price hikes, and gives you full transparent control over your tech-stack metadata.