A free, native Mac application for architecture: precise 2D drafting with an AutoCAD-style command line, intelligent building elements in the spirit of Revit, 3D views, rendering, sheets and printing — and a scripting interface that lets you, or an AI agent, design alongside you.
Free and open source (GPL-3.0) · macOS 14 or later
Plan and model side by side: every wall, door and window you draw in 2D is a real building element in 3D.
From the first line to the finished building
Lines, polylines with arcs, circles, arcs, ellipses, splines, rectangles, polygons, points and revision clouds. Object snaps, polar and ortho tracking, a grid and typed coordinates — absolute, relative and polar — put every point exactly where it belongs.
Move, copy, rotate, scale, mirror, stretch, trim, extend, offset, fillet, chamfer, break, join, explode and arrays, with grips on every object and undo for every step. Select with windows, crossings, filters and similar objects.
Type LINE, WALL, DOOR or any of the familiar commands and aliases. Prompts offer their options, autocomplete suggests as you type, Enter repeats the last command and scripts replay whole sequences.
Walls with layered wall types and clean joins, doors and windows hosted in walls, curtain walls, slabs, roofs (flat, shed, gable and hip), stairs, railings, columns, beams, grids, levels, rooms with automatic areas, and furniture.
Text and multiline text, linear, aligned, angular, radial, diameter, ordinate, baseline and continued dimensions, leaders, tables, 18 hatch patterns, layers with colours, linetypes and lineweights, blocks with attributes.
Orbit your building in a live 3D view with wireframe, hidden-line, shaded, realistic and X-ray styles, sun shadows and a walk mode. Elevations and sections are generated from the model.
Produce still renders up to 4K with the sun placed for your site, date and time, then save them as PNG or JPEG or export a turntable movie.
Lay out plans, elevations and sections at 1:50, 1:100 or 1:200 on A-series or Letter sheets with a title block, north arrow and scale bar, then print or plot vector PDF.
Automate with the JavaScript console, connect AI agents such as Claude through the built-in Model Context Protocol server or the local JSON-RPC interface, and run the headless archi-cli on your projects.
Sketch a plan, raise the walls and walk through the rooms — in one model.
Start a new drawing or a building template with levels, or open a DXF. Draw walls on a level and drop doors and windows into them; rooms find their own boundaries and areas.
Add floors, a roof and stairs, switch to 3D or split the window to see plan and model together, and orbit, section or walk through the building.
Place views on sheets and plot a PDF, render an image, or export DXF, SVG, IFC for BIM tools, OBJ, STL and glTF for 3D apps, and CSV schedules for spreadsheets.
A contemporary residence modelled in Oanarina Archi Tool: a red-cedar tower, limestone wings and a long black canopy over the entrance. It ships with the app as a sample project.
Realistic view with materials, textures and sun shadows, straight from the modelling window.
Everything you can click, you can type — and everything you can type, a script or an AI agent can do.
Connect Claude Desktop with one line in its settings: archi-cli --mcp ~/Documents/house.archi. The agent guide explains the tools.
Free architecture software for your Mac.
Version 1.0 preview · Apple silicon and Intel · 13.3 MB. Developer ID-signed and notarized by Apple.
Preview build — 25 September: drafting and editing, the command line, walls, doors, windows, floors, roofs, stairs and rooms, 3D views, rendering, sheets and PDF, DXF and IFC exchange, and scripting for AI agents. Updated builds follow as development continues.
Download for Mac| Platform | macOS 14 or later |
|---|---|
| Price | Free · open source (GPL-3.0) |
| Opens | .archi, DXF (R12–R2018) |
| Exports | PDF, DXF, SVG, PNG, IFC4, OBJ, STL, glTF (GLB), CSV schedules, .archi |
| Projects | .archi |
Download checksum · Source code
A few useful details
Yes. Oanarina Archi Tool is free software under the GNU General Public License 3.0: no account, no subscription and no watermark. The source code is public.
Open and save DXF drawings, the open exchange format AutoCAD, LibreCAD, BricsCAD and most CAD tools read and write. To bring in a DWG file, save it as DXF from your CAD application first. For building models, export IFC.
Yes. Drawings and models stay on your Mac. The optional agent server listens only on your own computer and is off until you turn it on.
This is an early preview of a long programme: the public feature register lists more than a thousand planned capabilities and marks what is already done. New versions are published here.
Oanarina Archi Tool is developed by Oana Rinaldi, with ideas drawn from the open-source FreeCAD, LibreCAD, IfcOpenShell, SolveSpace, OpenSCAD, BRL-CAD, Sverchok and CAD Sketcher communities. The license is included with the app.
Report a reproducible problem or suggest an improvement through the contact page or as an issue on GitHub. Include your macOS version and the steps that led to the problem.