Features

Features

Open Planner Studio is a complete construction-planning application. Everything below works identically in the desktop app and in the browser version — the same buttons, menus and shortcuts.

Scheduling

• Critical Path Method (CPM) — automatic calculation of early/late start and finish dates, total and free float, and the critical path.
• Work Breakdown Structure (WBS) — a hierarchical task structure with collapsible summary tasks.
• Relations — Finish-Start, Start-Start, Finish-Finish and Start-Finish dependencies, each with a lag or lead in work days.
• Constraints — start/finish constraints (such as Start No Earlier Than) for permits, deliveries and fixed dates.
• Milestones — start, finish and mandatory inspection milestones.
• Baselines & progress — capture baselines and track progress against them.

Calendars

• Work calendars — configurable working days and hours, holidays, the construction industry's collective holiday, and inspection moments.
• Resource calendars — per-resource availability.
• Hour-level planning — durations in work days with hour-level calendar resolution.

Resources

• Resource management — labour, equipment and subcontractors.
• Assignments — assign resources to tasks.
• Histogram & leveling — a resource histogram plus automatic leveling options.

Views & editing

• Interactive Gantt chart — drawn on an HTML5 canvas: drag & drop, zoom, dependency arrows and hit-testing.
• Table view — an Excel-like editor with inline, double-click editing over the same model.
• Context menus — right-click tasks for quick actions.
• Office-style ribbon — tabs for Start, Planning, Resources, View, Settings, Table, IFC and Report, plus a Backstage file menu.
• Multi-document — work on several projects at once and switch between them.

IFC & interoperability

• IFC 4.3 native — projects are saved and opened as IFC (buildingSMART); there is no separate project format.
• 4D BIM ready — link the schedule to an IFC building model.
• Import/export — CSV, Microsoft Project (.xml) and Primavera P6 (.xml) adapters.

Reporting

• Live print preview — configurable report options right in the ribbon.
• Vector PDF export — stays crisp at any zoom level and keeps text selectable and searchable, with a raster fallback for CJK and right-to-left scripts.

Platform & experience

• Desktop & browser — Windows, macOS and Linux desktop builds (Tauri 2) plus a full-featured browser version.
• Auto-save & crash recovery — your work is saved continuously and restored after an unexpected close.
• Automatic updates — the desktop app updates itself where the install type supports it.
• 14 languages — Nederlands, English, Français, Deutsch, Español, 中文, Italiano, Português, Polski, Türkçe, العربية, 日本語, 한국어 and فارسی, including right-to-left layout for Arabic and Persian.
• Extensible — a frontend extension system for importers, ribbon buttons, PDF fonts and more. See Extensions Authoring.