open-planner-studio

Open Planner Studio is a desktop application for construction planning:
Gantt charts, Critical Path Method (CPM) scheduling, resources and
calendars, with IFC 4.3 (buildingSMART) as its native file format — no
separate project format, no lock-in.

Scheduling & the Gantt chart:
- Interactive Gantt chart rendered on Canvas, with drag & drop (including
vertical drag to reorder or reparent tasks) and zoom
- Critical Path Method (CPM) with automatic critical-path and float
calculation
- Work Breakdown Structure (WBS) with collapsible task groups
- Spreadsheet-style table view for quick bulk editing
- Construction-specific calendars: holidays, seasonal shutdowns,
inspection milestones, phasing
- Built-in report view with a live, configurable print preview

Resource libraries:
- Resources and calendars live in a shared, project-independent library
instead of being copied into every project file
- Assigning a resource from the library materializes it into the
project, with per-item provenance stamps showing what it came from and
whether it has since drifted from the library version
- Share a resource library across a whole team or company, and reuse
the same equipment, crews, and calendars across many projects

File formats & interoperability:
- IFC 4.3 native file format — open and save directly in the
buildingSMART standard, so a project file is a standard-compliant IFC
model, not a proprietary blob
- Import/export for CSV, Microsoft Project, and Primavera P6

AI assistant (MCP):
- Open Planner Studio can expose itself as an MCP server, so an AI
assistant (such as Claude Code) can read and edit the open plan
directly — creating and rescheduling tasks, wiring up dependencies,
managing resources and calendars — instead of you doing it by hand
- Built-in safety controls: pause the assistant, put it in read-only
mode, automatic backups before AI-driven changes, and a visible
activity log of everything it did
- You decide when it's on — the AI assistant and its MCP server are
opt-in and off by default

Also included:
- An extension system for adding custom ribbon buttons and behavior
- 14 languages, including right-to-left support for Arabic and Persian

Open Planner Studio is free and open source (LGPL-3.0-or-later), part of
the OpenAEC Foundation family of applications, and built with Tauri for
a small, native footprint.