Modelur alternatives
If Modelur is not the fit, the strongest conceptual massing alternatives here are Rhino 3D, Autodesk Forma Site Design, and Blender. Rhino 3D brings from $995, API agent access, 3DM, DWG, DXF, IFC formats. Autodesk Forma Site Design brings Subscription, API agent access, IFC, RVT, glTF formats. Blender brings Free tier + from $0, CLI / API agent access, BLEND, FBX, OBJ, glTF formats.
This page compares every reviewed same-sub-category peer for Modelur, using the same verdict, score, pricing, agent-access, and format signals as the main hub.
Last updated 2026-07-19.
Conceptual Massing alternatives comparison
| Tool | Verdict | Composite | Price signal | Agent access | Key formats |
|---|---|---|---|---|---|
| Rhino 3D Visit site → Value for the price 5/5 reflects the $995 one-time license with a trial, Portability & lock-in 4/5 reflects 3DM, DWG, DXF, IFC-via-plugin, STEP, IGES, OBJ, FBX, STL, and SKP exchange, and Interoperability 5/5 reflects SketchUp, Revit via Rhino.Inside.Revit or IFC, V-Ray, Enscape, Lumion, and Grasshopper interoperability. Firm-size fit is solo to growing. | Worth it | 4.2 | from $995 | API | 3DM, DWG, DXF, IFC |
| Autodesk Forma Site Design Visit site → Agent Friendliness 4/5 and Portability & lock-in 5/5: Autodesk documents APS API access plus IFC, RVT, and glTF support, and the integration stack includes Revit, Civil 3D, Autodesk Tandem, Esri ArcGIS, and Zoneomics. Firm-size fit is small-team to growing. | Solid | 3.8 | Subscription | API | IFC, RVT, glTF |
| Blender Visit site → Value for the price 5/5 reflects the free tier, Agent Friendliness 3/5 reflects CLI and Python bpy automation, and Portability & lock-in 5/5 reflects BLEND, FBX, OBJ, glTF, GLB, DXF, STL, USD, and COLLADA workflows. Integrations include Unreal Engine, Unity, and Substance Painter; firm-size fit is solo to small-team. | Solid | 3.8 | Free tier + from $0 | CLI / API | BLEND, FBX, OBJ, glTF |
| SketchUp Visit site → Value for the price 5/5 reflects published pricing from $129/yr with a trial, Ease of adoption 5/5 reflects the web, desktop, and iPad surface, and Interoperability 4/5 reflects Revit, ARCHICAD, Lumion, Enscape, V-Ray, and Trimble Connect integrations. Exchange includes SKP plus DWG, DXF, IFC, FBX, OBJ, STL, and DAE, while Agent Friendliness 1/5 reflects no public CLI or MCP surface; firm-size fit is solo to growing. | Solid | 3.6 | from $129 | API | SKP, DWG, DXF, IFC |
| Skema Visit site → Value for the price 4/5 reflects the free community tier plus self-serve paid tiers, Portability & lock-in 4/5 reflects RVT round-trip and IFC export, and Interoperability 4/5 reflects the Revit, Grasshopper, and Miro integration set. Agent Friendliness 2/5 reflects the absence of public developer docs for the vendor-claimed API surface. | Solid | 3.6 | Free tier + from $199 | API | RVT, IFC |
| Giraffe Visit site → Value for the price 4/5 reflects the usable free tier plus the self-serve Core entry, Agent Friendliness 3/5 reflects the documented Workspace API and JavaScript SDK, Portability & lock-in 4/5 reflects IFC and DWG export, and Interoperability 3/5 reflects the Revit, ArcGIS, and Rhino integration set. Firm-size fit spans solo to growing. | Solid | 3.6 | Free tier + from $0 | API | IFC, DWG |
| Archistar Visit site → Agent Friendliness 4/5 reflects the public API with API-key auth, and Portability & lock-in 3/5 reflects JSON output. This placement is the zoning and feasibility surface rather than a model-authoring stack; firm-size fit is solo to small-team. | Solid | 3.4 | Subscription | API | JSON |
| FreeCAD Visit site → Agent Friendliness 3/5 reflects CLI plus the Python API, Portability & lock-in 5/5 reflects FCStd, STEP, IGES, IFC, STL, DXF, OBJ, DAE, and SVG exchange, and Interoperability 4/5 reflects Revit via IFC and BricsCAD via DWG/DXF interoperability. red flag: fails the existence gate and Ease of adoption 2/5 reflect the steeper community-supported adoption path, and firm-size fit is solo. | Solid | 3.4 | Free tier + from $0 | CLI / API | FCStd, STEP, IGES, IFC |
| TestFit Visit site → Value for the price 4/5 reflects public pricing, and Portability & lock-in 4/5 reflects DXF, CSV, glTF, SKP, and PDF coverage. The documented surface is a residential site-layout and unit-mix workflow with Revit, AutoCAD, SketchUp, Zoneomics, ESRI, and Rayon integrations. | Solid | 3.2 | Subscription | None | DXF, CSV, glTF, SKP |
| Finch3D Visit site → Interoperability 4/5 reflects Revit, Rhino, Grasshopper, ArchiCAD, and Autodesk Forma integrations, while Value for the price 3/5 reflects a freemium entry point. The documented file surface is RVT and 3DM, and firm-size fit is solo to small-team. | Solid | 3.2 | Free tier | None | RVT, 3DM |
| ONUMA Medical Planner Visit site → Value for the price 4/5 reflects published pricing from $58 per user per month plus a free Viewer, while Portability & lock-in 4/5 reflects IFC and COBie export. The conceptual-massing placement is healthcare space and equipment planning with Google Earth, ESRI ArcGIS, and VA/DoD SEPS integrations; Agent Friendliness 2/5 reflects no publicly documented CLI or MCP despite REST and BIMXML APIs. | Solid | 3.2 | Free tier + from $58 | API | IFC, COBie |
| Shapr3D Visit site → Value for the price 4/5 reflects the freemium model with a free Basic tier and $299/yr Pro, Portability & lock-in 3/5 reflects STEP, DWG, OBJ, FBX, STL, IGES, DXF, USDZ, and 3MF exchange, and Interoperability 4/5 reflects KeyShot and SolidWorks-via-STEP handoff. Agent Friendliness 1/5 reflects no documented public API, CLI, or scripting surface, and firm-size fit is solo to small-team. | Solid | 3.0 | Free tier + from $299 | Not stated | STEP, DWG, OBJ, FBX |
| Dwellci Visit site → Value for the price 4/5 reflects the public self-serve pricing page at $99/month base, and Ease of adoption 3/5 reflects access for solo and small-team use. red flag: agent-hostile keeps Agent Friendliness 1/5 because delivery is a GUI web app with no public API. | Situational | 2.4 | from $99 | API | |
| Digital Blue Foam Visit site → Portability & lock-in 4/5 reflects GeoJSON import plus IFC export with Revit and Archicad integrations. red flag: pricing wall keeps Value for the price at 1/5 because pricing is enterprise/government custom plus waitlist with no public pricing, and Agent Friendliness 1/5 reflects no public API, CLI, MCP, webhook, or scripting surface. | Situational | 2.4 | Quote-only | API | IFC, GeoJSON |
| Maket.ai Visit site → Value for the price 2/5 despite freemium pricing, Agent Friendliness 2/5 with no public API, CLI, or scripting surface, and Portability & lock-in 3/5 with DXF, DWG, and PDF output. Firm-size fit is solo to small-team. | Situational | 2.2 | Free tier | None | DXF, DWG, PDF |
| Higharc Visit site → The conceptual-massing placement is residential plan generation from marked-up PDF inputs rather than open-format massing exchange. red flag: pricing wall and red flag: agent-hostile keep Value for the price 2/5 and Agent Friendliness 1/5, and Interoperability 3/5 reflects the ECI MarkSystems and US LBM integrations. | Situational | 2.2 | Quote-only | Not stated | |
| Zenerate Visit site → Portability & lock-in 4/5 reflects RVT, DWG, XLSX, and PDF export from generated site, floor, and parking plans, while red flag: pricing wall keeps Value for the price 1/5 because access is enterprise quote-gated with no public pricing. Agent Friendliness 1/5 reflects delivery as a GUI web app with no public API. | Situational | 2.2 | Quote-only | API | RVT, DWG, XLSX, PDF |
| Lab Design Tool Visit site → The conceptual-massing placement is browser-based lab layout and workflow planning rather than general BIM or CAD authoring. red flag: pricing wall and red flag: agent-hostile keep Value for the price 2/5 and Agent Friendliness 1/5 because pricing is quote-only and no documented API, CLI, or MCP surface is published; Portability & lock-in 2/5 reflects only documented PNG export. | Situational | 2.0 | Quote-only | Not stated | PNG |
| BUILDPLAN Visit site → The conceptual-massing placement is the site-setup-to-massing workflow with PDF proposal export. red flag: pricing wall keeps Value for the price at 1/5 because pricing is sales-led with no disclosed pricing, Agent Friendliness 1/5 reflects no public API, CLI, MCP, webhook, or scripting surface, and Portability & lock-in 3/5 reflects IFC import plus PDF export. | Skip | 1.8 | Quote-only | API | PDF, IFC |