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SPECIFICTION
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Open Planner Studio vs SiteAnchor

Open Planner Studio

open-aec.com

SiteAnchor

site-anchor.com

Side by side

FigureOpen Planner StudioSiteAnchor
Price fromFree$59/mo
Free planYes—
Free trial—Yes
Open source——
WebYesYes
WindowsYes—
macOSYes—
LinuxYes—
Plans published24
Spec score · Construction Scheduling Software7.8 (#11)7.4 (#17)
HeadquartersDordrecht, NetherlandsDover, Delaware, United States
PurposeOpen Planner Studio is an open source construction planning tool for buildings, infrastructure and civil works.SiteAnchor is construction management software that brings leads, estimates, scheduling, blueprints, daily logs, crew time, and invoicing into one dashboard.
SupportThe app includes an offline manual in fourteen languages, with a quick start, practical guides, reference pages and sample projects.The contact page invites questions by email at [email protected] and says the team will get back shortly.

Plans

Open Planner Studio

  • Free and open sourceFree
  • Open Planner StudioFree

Open Planner Studio pricing →

SiteAnchor

  • Starter$59 a month
  • Growth$129 a month
  • Peak$199 a month
  • Unlimited$329 a month

SiteAnchor pricing →

In their own words

Open Planner Studio

Open Planner Studio is an open-source construction planning tool for buildings, infrastructure and civil works. It provides Gantt charts, automatic critical-path calculation, resource histograms and automatic levelling when resources are overallocated. Schedules use native IFC 4.3; the app imports and exports IFC, CSV, MS Project XML and Primavera P6 XML, and opens MS Project MPP files. Construction calendars can account for holidays, recesses, frost delays, inspections and phasing, with task durations entered in days or hours. Reports export as PDFs at approximately 220 DPI, on paper sizes up to A2, with baseline overlays and status or progress lines. A built-in MCP server allows compatible AI clients to read and edit schedules, with pause, read-only mode, backups and an activity panel. Schedules are stored as IFC files rather than a proprietary closed format. Crash recovery is available, alongside optional periodic saving to a writable project file. The app is marked Available Beta and includes an offline manual in fourteen languages. It runs on Linux, macOS, Windows and the web.

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SiteAnchor

SiteAnchor has no write-up on Specifiction yet; its figures are above.

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