AutoCAD vs TAD Designer

AutoCAD is software for precise 2D and 3D drafting, design, and modeling. It uses DWG as its primary file format and also supports DXF and PDF underlays. Seven specialized toolsets address architecture, mechanical, MEP, electrical, plant, mapping, and raster design. Teams can share DWG files, work in parallel, and add markups with multiple users. AI capabilities include markup assistance, block replacement suggestions, and contextual productivity tips. Standalone subscriptions include Forma Data Management Essentials. AutoCAD runs on Windows, macOS, web, iOS, and Android; subscriptions include web and mobile access. Each subscription is assigned to one named user and can be installed on up to three devices, with use limited to one device at a time. A 15-day free trial is available. Pricing starts at $175 per month; listed options are $260 per month or $2,095 per year. Eligible students and educators can receive renewable one-year access while eligible.

TAD Designer Lite is a space-based BIM tool for architectural design, intended to support work from early concepts through more detailed models. A design can begin with 2D shapes and gain 3D attributes later, while users query information such as areas and distances. Its built-in ARDELA language lets users make probes or add-ons for model analysis. TAD is not drafting software; designs can be exported to CAD and 3D software, including RenderMan-compatible renderers and POV-Ray. Listed supported formats include VRML 2, Virtualight, and RenderMan. The maker describes Lite as intended for small and medium architectural offices, especially in developing countries. Work is saved on the user's computer or LAN. The maker says binary files receive a DRM signature to help protect models from misuse or copying. Support includes Discord community help, in-app contextual help, and online documentation. TAD originated in an architect's office in India in 1989. Lite is free to use; the full version requires free teamTAD Discord membership, and demo mode is available.