25 phases built — still shipping

From idea to documentation, nothing lost in translation.

Real-time collaboration — your whole team, one model.

Energy. Fire. Geotech. All in your browser.

Browser-native BIM. No installs. No licenses. No file translation. Just precision.

Open the app See what's built →

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Atlantist — Da Vinci Atlant illustration

Atlantist — Built to Proportions

Inspired by Da Vinci's Vitruvian Man and Le Corbusier's Modulor — a system of proportions derived from the human body and the golden ratio.

What's Built

Professional BIM, fully in-browser.

Everything in this list is live and functional. No betas, no coming soon.

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Architecture & Structure

Parametric walls and columns with multi-layer construction. DAG constraint solver propagates every parameter change instantly across plan, section, and 3D views. Levels bind elevation, levels cascade down.

Walls Columns Levels Doors Windows Floors Ceilings Stairs Railings

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Energy Analysis

NYECC EN-001 through EN-008 compliance. gbXML export from BIM geometry, IDF generation for EnergyPlus. 8,760-hour yearly simulation with animated Year Viz playback — room heatmaps, HVAC load curves, peak load dashboard.

EN-1 Form EN-2 to EN-8 gbXML IDF Export DOB Package

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Fire Protection

NFPA 13 sprinkler hydraulics, NFPA 101 egress analysis, NFPA 92 smoke control, IBC fire resistance. FDS 6.x input file generator from BIM geometry. Animated 3D fire simulation with smoke layer, sprinkler activation, tenability.

NFPA 13 NFPA 101 NFPA 92 FDS FDNY FP-1

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Geotechnical Analysis

Bearing capacity (Terzaghi, Hansen, Meyerhof), elastic and consolidation settlement, lateral earth pressure (Rankine, Coulomb), pile capacity, slope stability. OpenSees .tcl export. Three.js borehole cross-section visualization.

Terzaghi Hansen Rankine OpenSees Borehole Viz

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Real-Time Collaboration

WebSocket + WebRTC shared viewport, live presence avatars, issue pins with camera snapshots and threaded comments.

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Design Book

A-400 schedules auto-populate from model. Product placeholder system with approval workflows. Pella and Simpson Strong-Tie catalog.

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Year Visualization

8,760-hour animated playback. Room heatmap on 3D mini-viewport. Monthly heating/cooling charts. MP4/WebM export.

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Issue Tracker

Pinned tickets anchored to model elements. Camera snapshot at creation. Threaded comment threads. Priority and status.

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MEP Systems

HVAC duct layout, plumbing risers, electrical conduit routing. Load calculations per system. Clash detection.

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Rooms & Structural Grids

Room auto-boundary from enclosing walls (shoelace formula). Structural grids with labeled X/Z axes and intersection snaps.

Analysis Engines

Every simulation. One browser tab.

Run energy analysis, fire protection, geotechnical, and structural simulations without leaving the model.

EnergyPlus

Energy Analysis

8,760-hour yearly simulation from BIM geometry. gbXML export, IDF generation, EN-001 to EN-008 compliance. Room heatmap in 3D. Monthly stacked bar charts.

EN-001 to EN-008 gbXML Year Viz DOB Package

NIST FDS

Fire Protection

NFPA 13 sprinkler hydraulics, NFPA 101 egress, NFPA 92 smoke control. FDS input generation from BIM. Animated 3D fire visualization with smoke layer, sprinkler activation, and tenability metrics.

NFPA 13 NFPA 101 NFPA 92 FDS 6.x FDNY FP-1

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Geotechnical

Geotechnical Analysis

Bearing capacity, settlement, lateral earth pressure, pile capacity, slope stability. OpenSees .tcl export. Three.js borehole cross-section visualization.

Terzaghi Hansen OpenSees

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Structural

Structural Analysis

Beam and column structural analysis — shear, moment, deflection. Steel and concrete member design per AISC/ACI. Load combination engine. Active development.

AISC ACI In Dev

Pricing