T-FLEX CAD

What it is

T-FLEX CAD is a freemium computer-aided design product combining hybrid 3D modeling with drafting and drawing production for mechanical design. It supports 2D and 3D design, conceptual sketching, reverse engineering, tolerancing inspections, rapid prototyping, and downstream manufacturing. Parametric variables and relationships can drive changes across designs, associated parts, and attributes. Assembly tools cover bottom-up and top-down workflows, product configurations, and simulated motion. Sheet-metal, mold, weldment, piping, cabling, surface-modeling, and assembly tools are included. Express Analysis provides first-pass stress analysis; more advanced analysis is a separate product. Import and export cover formats including DWG, DXF, STEP, IGES, Parasolid, ACIS, JT, STL, OBJ, IFC, and many system-specific files. The .NET-based Open API supports add-ons and workflow automation. Windows is supported, while Linux use is through Wine. A free plan and 30-day trial are available; commercial pricing is on request.

Who it suits. T-FLEX CAD suits mechanical designers and manufacturing teams needing parametric modeling, assemblies, drafting, and broad file exchange. Windows users are directly supported; Linux use relies on Wine.

Verdict

T-FLEX CAD covers design, drafting, assemblies, manufacturing tools, and interoperability in one product. Its freemium entry and broad translators offer a route for evaluation before commercial licensing.

Plans and prices

From T-FLEX CAD's own pricing page, checked 8 Oct 2026. Every plan

What the maker publishes

Analysis

Built-in Express Analysis provides a first-pass stress analysis tool, while more advanced capabilities are offered in the separate T-FLEX Analysis product. source

API

T-FLEX Open API is based on .NET and supports custom add-ons and workflow automation using multiple programming languages. source

Assemblies

Assembly tools support bottom-up and top-down design, product configurations, and simulated motion and mechanical interaction. source

Assembly design

Yes source

Company

Top Systems says it develops and distributes T-FLEX products mainly for mechanical manufacturing and is based in Moscow, Russia. source

Design uses

The maker lists 2D/3D design, drafting, conceptual sketching, reverse engineering, tolerancing inspections, rapid prototyping, and downstream manufacturing among its uses. source

File import and export

Import: DWG, DXF, STEP, IGES, Parasolid, ACIS, SolidWorks, Inventor, NX, Creo, CATIA, Solid Edge, Rhino, Revit, IFC, JT, FBX, STL, OBJ, PLY, 3MF, GLTF/GLB, and others. Export: DWG, DXF, PDF, STEP, IGES, Parasolid, ACIS, JT, STL, OBJ, PLY, VRML, X3D, IFC, 3MF, and others. source

Founded

1989 source

Founded

Top Systems was formed in 1989 and officially registered in 1992, according to its company history. source

Free plan

Yes source

Headquarters

Moscow, Russia source

Interoperability

The maker lists translators for formats and systems including Siemens NX, CATIA, Creo, Inventor, SolidWorks, STEP, IGES, DWG, DXF, and PDF. source

Licensing

The maker describes stand-alone licenses for individuals or small offices and network licenses for organizations; new commercial licenses include first-year maintenance and support. source

Manufacturing features

The product includes sheet-metal, mold, weldment, piping, and cabling design tools. source

Modeling method

hybrid source

Parametric design

Variables and relationships can drive changes across a design, including associated parts and their attributes. source

Platform

The maker lists Windows system requirements and says T-FLEX CAD supports Windows 11 and Astra Linux using Wine. source

Purpose

T-FLEX CAD combines 3D modeling with drafting and drawing production for mechanical design. source