progeCAD
progeCAD is an AutoCAD® compatible 2D/3D CAD application that works with AutoCAD® DWG files from AutoCAD® 2.5 through AutoCAD® 2021 and imports Autodesk Revit® and IFC files! The best solution for AEC, MCAD and all generic CAD usages. progeCAD sells with perpetual licensing and offers more CAD functions than AutoCAD® LT at a fraction of the cost of AutoCAD®, ArchiCAD® or Microstation®. DWG is progeCAD's native file format. It is the same AutoCAD’s file format, so when you open an existing DWG file with progeCAD, there's no file conversion and no data loss. We provide industry standard compatibility with AutoCAD®, that means you can get to work immediately using DWG files, commands, fonts, blocks, hatches and Linetypes. Furthermore, progeCAD imports Autodesk Revit® and IFC BIM objects.
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AutoCAD
Autodesk AutoCAD is the world’s leading 2D and 3D CAD software, trusted by millions of architects, engineers, and construction professionals. It provides precision tools to design, draft, and document complex projects across industries. The 2026 version introduces Autodesk AI, enabling automated drafting, smart block recognition, and real-time collaboration through Autodesk Docs. With customizable workspaces, AutoLISP automation, and access to over 1,000 apps, users can streamline every stage of their design workflow. AutoCAD also offers seven specialized industry toolsets that boost productivity by up to 63%, from architecture to electrical and mechanical design. Available on desktop, web, and mobile, AutoCAD empowers professionals to design anywhere with confidence and efficiency.
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DWGSee CAD
DWGSee CAD is a lightweight and affordable CAD software designed for fast, stable, and fully compatible 2D drafting. It offers a classic CAD interface with command line support, making it familiar to AutoCAD users while requiring far fewer system resources. DWGSee CAD allows users to open, edit, and create DWG, DXF, and DWF files with full compatibility across AutoCAD versions. The platform includes a comprehensive set of drawing, editing, and annotation tools for professional drafting workflows. Advanced features such as Dimension Driven design enable precise adjustments by modifying dimensions directly. DWGSee CAD supports exporting drawings to PDF or image formats and provides robust printing and batch printing capabilities. With a small installation size and a one-time lifetime license, DWGSee CAD delivers professional CAD functionality at a significantly lower cost.
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LITIO
LITIO 2.0 is a sheet metal add-on for AutoCAD, GStarCAD, ZwCAD & BricsCAD [and cadmate] that calculates and draws the flat sheet development of ducts, rectangle-to-round transitions, cylinders, cones, pipe intersections, connections, Ys, elbows, etc. LitioLAB 1.0 is an advanced, complex-shape, mathematical drawing tool for AutoCAD, GStarCAD and ZwCAD, that helps you draw complex shapes (either 2D curves, 3D curves or 3D surfaces), that are not available as standard commands within AutoCAD or GStarCAD or ZwCAD. Give your AutoCAD/GStarCAD/ZwCAD advanced drafting capabilities? Import XLS coordinate point data and draw them as CAD entities? Easily draw complex math shapes? LITIO 2.0 sheet metal for AutoCAD, GStarCAD, ZwCAD & BricsCAD [and cadmate]. Do you need to manufacture sheet metal parts and patterns?
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