acad replacement. powerful 2d and 3d design software low priced, useful for cad field & concept sketch, electrical schematics, building construction, aec architectural, civil, gis, topography, structural, mechanical and industrial engineering, mcad mechanical. ifc,step,iges,shp,pdf import

qcad is a free, open source 2d cad system for windows, linux and mac.

autodesk は、建築、エンジニアリング、建設施工、デザイン、製造、エンターテインメントなど、多分野にまたがる専門知識を持つ設計の世界的リーダーであり、テクノロジーの開発を推進しています。

the freedom to create

savannah is a central point for development, distribution and maintenance of free software, both gnu and non-gnu.

our generative design software enables architects, builders & developers to quickly generate thousands of architectural plans instantly.

graphisoft solutions graphisoft services help & support

sketchup is a premier 3d design software that truly makes 3d modeling for everyone, with a simple to learn yet robust toolset that empowers you to create whatever you can imagine.

professional-grade 2d cad software that can be used to create, edit, view, and markup any kind of 2d drawing or dwg file.

autodesk è leader mondiale della tecnologia di progettazione destinata alla creazione in molti settori diversi, come architettura, ingegneria, costruzione, design, produzione e intrattenimento.