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Open Source Gantt Chart Software (2026)
Last updated: February 2026
6 software options
Sponsored
Odoo
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
All-in-one open-source business software
Odoo offers flexible pricing plans to accommodate various business needs. The One App Free plan allows one app and unlimited users for free. The Standard plan starts at $31.10 per user per month (billed annually) and offers all apps. The Custom plan starts at $61.00 per user per month (billed annually) and includes Odoo Studio, Multi-Company, and an External API.
Read more about Odoo
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Online work execution platform for businesses of all sizes
Choose the plan that works best for you and manage your projects, programs, and processes — all in one place. Plans start at $9.00/month when billed annually.
Read more about Smartsheet
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Project management software for small and medium businesses
Free and open-sourced
Read more about GanttProject
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
One platform to streamline your entire business
Read more about Bonsai
