Cross-platform · Fully local · Open formats

Plan your projects.
Keep your data.

JeeGantt is a simplified, cross-platform desktop project planner — a lightweight alternative to Microsoft Project. Tasks, WBS, dependencies, resources and an interactive Gantt chart, all in a single local file. No account, no cloud.

Get started Explore features
  • Windows
  • macOS
  • Linux

Everything you need to plan

A focused feature set, modelled on professional project management tools.

Interactive Gantt

Task and summary bars, milestones, dependency links, critical-path highlighting, progress fill, drag-to-move and a baseline overlay.

WBS task grid

Hierarchical tasks with inline editing, indent/outdent, link/unlink, move up/down with automatic WBS renumbering and hide/show columns.

CPM scheduling engine

Forward/backward passes over a working calendar, four dependency types (FS/SS/FF/SF) with lag, total slack, critical path and cycle detection.

Resources & costs

Assignments, workload, over-allocation detection and cost roll-up, with costs formatted by currency and locale.

Baselines

Capture a planned snapshot and compare start/finish variance directly on the Gantt chart.

PDF reports

Export the Gantt chart, progress reports and resource-workload reports to PDF, with a time axis following the project scale.

Your data stays yours

One file. Fully local. No cloud.

Every project lives in a single .jgp file on your machine — atomic saves with a backup, undo/redo and a workspace session. No account to create, nothing to sync, nothing leaves your computer.

  • Single-user, offline-first
  • Atomic save with automatic backup
  • Undo / redo and recent files

Works with the tools you already use

Import and export across the formats your team and clients expect.

MS ProjectRead .mpp / MSPDI / .mpx, export MS Project XML
ExcelImport & export tasks and resources (.xlsx)
CSVTabular import & export
PDFGantt, progress and resource reports

Note: no open-source library can write the binary .mpp format. JeeGantt reads .mpp fully and exports the interoperable MS Project XML (MSPDI), which Microsoft Project opens natively.

Built on a solid stack

Modern, cross-platform and open foundations.

.NET 10C# 13, LTS runtime
Avalonia 12Native UI on Windows, macOS & Linux
Fluent themeLight & dark, switchable at runtime
IT · ENLocalized UI, switchable at runtime

Download JeeGantt

Pick the package for your platform. Every release is published with a SHA-256 checksum so you can verify your download.

After downloading, verify the file's SHA-256 checksum matches the value shown on its card before installing.