1.AhmadHassan-BTed / Jantt
The AI-native JSON Gantt chart engine. Dependency-free interactive timelines with React, script-tag, CLI, topological DAG solver, and formal JSON schema.
+6,179 stars
from 132 · score 8.73
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2.makeplane / plane
🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage.
+1,627 stars
from 60,199 · score 7.40
3.opf / openproject
OpenProject is the leading open source project management software for product, project and portfolio management. A powerful Jira alternative with agile planning, issue tracking, roadmaps, Gantt charts, time tracking, collaboration features, and more. Available on premises or in the cloud. ⭐ Star us on GitHub
+638 stars
from 16,270 · score 6.46
4.Leantime / leantime
Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind.
+260 stars
from 11,685 · score 5.56
5.frappe / gantt
Open Source Javascript Gantt
+25 stars
from 6,132 · score 3.26
6.svar-widgets / gantt
Svelte Gantt chart component – lightweight, customizable, interactive, and fast.
+2 stars
from 259 · score 1.10