TYCAD is described as 'Application for Computer Aided Drafting (CAD) in two dimensions (2D). With TYCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams'. There are more than 25 alternatives to TYCAD for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and PortableApps.com. The best alternative is LibreCAD, which is both free and Open Source. Other great apps like TYCAD are DraftSight (Paid), QCAD (Free Personal), Assetforge (Paid) and nanoCAD (Paid).
CAD X11® Free include 3-D wireframe modeling, surfacing, DXF import, 2-D drafting with ANSI, ISO and JIS dimensioning, geometric tolerancing, TrueType Font support, undo/redo, dynamic rotations, multiple views, data verification, geometric analysis, crosshatching, Windows...
Ideal for garden design, mechanical engineering drawings, electrical / electronic, building and room plans, and general diagramming. Output in PDF format for the web. Copy and paste graphics. Create standard symbols to re-use. Scale, mirror and rotate.
2-D engineering drawing editor that supports hierarchical object description. It is inspired by Hewlett-Packard's proprietary HP PIGLET (Personal Interactive Graphic Layout EdiTor), which later became the commercial Graffy editor by DURST CAD.