| AutoCAD C2 4/5 reflects the APS API plus AutoLISP, JavaScript, .NET, and ObjectARX scripting, and C4/C5 5/5 reflect native DWG plus DXF, PDF, DGN, and IFC coverage with Revit, M365, Bluebeam, and APS integrations. | Worth it | 4.8 | Sub | MCP / API | 5 | 4 | 5 | 5 | 5 | Small team, Growing firm | none |
| BlenderBIM (Bonsai) Free, open-source native IFC authoring add-on for Blender (formerly named BlenderBIM, renamed Bonsai in 2024). Built on the IfcOpenShell library, it lets users view, author, and enrich IFC BIM models directly inside Blender, covering modeling, drawing generation, and openBIM workflows. Distinct from the catalog's unrelated existing "Bonsai" entry (hellobonsai.com, a freelancer invoicing SaaS). | Worth it | 4.6 | Free tier + from $0 | API | 5 | 4 | 5 | 5 | 4 | Solo, Small team | none |
| AutoCAD LT C3 5/5 reflects the lighter 2D-only AutoCAD workflow, C4 5/5 reflects DWG, DXF, PDF, DGN, and DWF coverage, and C2 3/5 reflects AutoLISP and JavaScript support without a public REST API or MCP surface. | Worth it | 4.4 | Sub | None | 5 | 3 | 5 | 5 | 4 | Solo, Small team | none |
| BricsCAD C3 5/5 reflects AutoCAD-style onboarding, C4 4/5 reflects DWG, DXF, IFC, PDF, DGN, and STEP coverage, and C5 5/5 reflects Revit, Bluebeam, and open BIM interoperability. C2 3/5 reflects AutoLISP, BRX, .NET, and COM extensibility without a public REST API. | Worth it | 4.2 | Sub | None | 4 | 3 | 5 | 4 | 5 | Solo, Small team | none |
| DraftSight C1 4/5 reflects public subscription pricing, C4 4/5 reflects DWG, DXF, DGN, PDF, STEP, CATIA import, and IFC BIM-module coverage, and C2 3/5 reflects LISP/DCL, .NET, and COM extensibility rather than a public REST API. | Solid | 3.8 | Sub | None | 4 | 3 | 4 | 4 | 4 | Solo, Small team | none |
| ZWCAD C1 4/5 reflects one-time licensing, C4 4/5 reflects DWG, DXF, IFC, DGN, STEP, PDF, and RVT import coverage, and C2 3/5 reflects AutoLISP, VBA, .NET, COM, and ZRXSDK extensibility without a public REST API. | Solid | 3.8 | One-time | None | 4 | 3 | 4 | 4 | 4 | Solo, Small team | none |
| nanoCAD C1 3/5 reflects the free base edition plus paid Pro/modules, C4 4/5 reflects DWG, DXF, IFC import, and PDF underlay support, and C2 3/5 reflects AutoLISP, .NET, COM, JavaScript, VBScript, Python-via-COM, and C++ extensibility without a public REST API. | Solid | 3.4 | Free tier | None | 3 | 3 | 4 | 4 | 3 | Solo, Small team | none |
| Rayon C1 5/5 reflects the free tier and self-serve Pro and Team pricing, C4 3/5 reflects DWG, DXF, and partial PDF exchange, and RF2 caps C2 because no public API, CLI, or MCP is documented. Firm-size fit spans solo to growing. | Solid | 3.4 | Free tier + from $21 | API | 5 | 1 | 5 | 3 | 3 | Solo, Small team, Growing firm | Agent-hostile |
| QCAD C1 3/5 reflects the free base plus paid Pro/DWG-plugin path, C2 3/5 reflects the CLI and ECMAScript scripting surface without a public REST API, and C4 4/5 reflects DXF, DWG via the Professional plugin, PDF, SVG, PNG, JPEG, and TIFF coverage. | Solid | 3.2 | Free tier | CLI | 3 | 3 | 3 | 4 | 3 | Solo, Small team | none |
| Trimble Business Center Survey CAD software for processing field data from GNSS, total stations, laser scanners, drones, and mobile mapping into high-quality deliverables, with specialized modules for mining, monitoring, tunneling, bridge, and GIS workflows. | Solid | 3.0 | Free trial | None | 3 | 2 | 2 | 4 | 4 | Small team, Growing firm | none |
| LibreCAD C1 3/5 reflects free licensing, C4 4/5 reflects DXF, DWG import, PDF, and SVG coverage, and C2 2/5 reflects GUI command scripts only with no public API or documented integrations. | Situational | 2.8 | Free tier | None | 3 | 2 | 3 | 4 | 2 | Solo, Small team | none |
| MicroStation The 2D-drafting placement centers on DGN-native desktop authoring with partial DWG exchange and PDF export; RF3 remains attached because DGN is the native format, and C2 4/5 reflects the documented SDK and OpenAPI surface. | Situational | 2.8 | from $2,656 | API | 3 | 4 | 2 | 2 | 3 | Small team, Growing firm | Lock-in |