Open Planner Studio

Overview

Open Planner Studio is an open-source construction planning app for building, infrastructure and civil-works schedules. It best suits planners and BIM coordinators who want scheduling tied to open building data. Its IFC-first approach and free licence are strong reasons to consider it, though beta status makes it a less certain fit for teams that need an established platform.

Schedules are stored as IFC files, an open buildingSMART standard, rather than a proprietary format. The app is marked Available Beta in the OpenAEC ecosystem, and its maker invites work planners, schedulers, project leads and BIM coordinators to test it and offer feedback. OpenAEC’s structure includes a Foundation that maintains tools, OpenAEC Studio for implementation, hosting, custom development and professional support, plus a contributor community. An offline manual in fourteen languages includes a quick start, practical guides, reference pages and sample projects.

Key features

Scheduling and resources

Gantt charts provide a visual schedule, while automatic critical-path calculation identifies the sequence that determines project duration. Resource histograms show demand, and automatic levelling addresses overallocation. These tools give planners a useful scheduling and capacity-planning foundation without a licence charge.

Construction calendars can account for holidays, recesses, frost delays, inspections and project phasing. Tasks can use durations in days or hours, giving teams flexibility to represent different kinds of work. The features are focused on construction planning rather than generic task lists.

Open formats and AI access

The app uses native IFC 4.3 schedules and can import and export IFC, CSV, MS Project XML and Primavera P6 XML. It also opens MS Project MPP files natively. That range can help teams exchange schedules across established tools and keep data in an open format, though no claim is made that every format preserves every scheduling detail.

A built-in MCP server allows compatible AI clients, including Claude Code, to read and edit schedules. Pause controls, read-only mode, automatic backups and an activity panel provide safeguards and visibility around that access. Teams that do not use compatible AI clients can still use the scheduling features without this integration.

Reports and document safety

Reports export to PDF at approximately 220 DPI and support paper sizes up to A2, baseline overlays, and status or progress lines. This is useful for sharing schedule snapshots and progress views beyond the app.

Crash recovery and optional periodic saving to a writable project file help protect work, while unsaved documents are not automatically overwritten. That avoids an automatic overwrite of unsaved work, but users still need to save deliberately or enable periodic saving.

Pricing

Open Planner Studio is free and open source under LGPL-3.0, priced at $0. There is no subscription and no per-seat licence fee. The free offering includes Gantt charts, critical-path analysis, resource planning and levelling, IFC 4.3 schedules, and desktop and browser use. There is no paid tier or free-trial period to weigh against it.

This is a straightforward choice for teams wanting to evaluate or use the scheduling tools without recurring licence costs. The trade-off is not a cheaper plan with reduced features: it is the beta status, which may not suit teams that require a settled production platform.

Platforms

Open Planner Studio is available on Linux, macOS, Windows and the web. It has no mobile apps, so teams needing a native phone or tablet workflow should look elsewhere.

Who it's for

Construction work planners, schedulers, project leads and BIM coordinators are the clearest audience, particularly those managing buildings, infrastructure or civil works and working with IFC-based project data. The open formats and lack of per-seat fees make it worth considering for teams that need schedule exchange without adding licence costs as seats grow. It is less suitable when mobile apps or a non-beta product are requirements.

Pros and cons

• Pros: Native IFC 4.3 schedules and broad import and export support give teams several routes for exchanging project schedules.
• Pros: Critical-path calculation, resource histograms and automatic levelling cover core scheduling and allocation needs.
• Pros: Free and open source under LGPL-3.0, with no subscription or per-seat licence fees.
• Pros: Offline documentation in fourteen languages and PDF reporting support learning and sharing work.
• Cons: Available Beta status makes it a cautious choice for teams seeking an established production tool.
• Cons: No mobile apps means there is no native mobile option for field or on-the-go use.

Alternatives

For a broader construction-scheduling shortlist, see Construction Scheduling Software; for a wider range of charting tools, see Gantt Chart Software.

• usBIM.platform is a better fit when mobile access matters: it supports Android and iOS as well as web and Windows, and its free basic configuration includes 10 GB of cloud storage and free online applications.
• Trimble Quadri suits readers who mainly need a free read-only model viewer with commenting and measurement tools; its Quadri Viewer supports viewing, commenting, and measuring distances and areas.
• Oracle Primavera Cloud is an alternative for teams considering paid cloud services, with listed monthly options at $12 a month for Progress Cloud Service and $55 a month for Task Management Cloud Service.
• FinitePath is another web-based freemium scheduling option.
• LookAhead is a paid option with Android, iOS and web platforms.
• TeamGantt is a freemium web and mobile alternative; its Personal plan allows 1 user, 1 project and 40 tasks, while Basic is $24 a month.
• ALICE is a paid web-based alternative with custom quotes based on project size and scope, unlimited users and data, and dedicated customer success support.
• GanttAI is a paid web-based alternative with a free trial.

Verdict

Open Planner Studio is a strong candidate for construction planners and BIM coordinators who want IFC-based scheduling, resource planning and broad file exchange without subscription or per-seat costs. Its combination of construction calendars, critical-path tools and open formats is the main reason to choose it. Look elsewhere if your workflow depends on mobile apps or you need a product beyond beta.