NanoCAD

Easier to use over the CAD programs available in Portable Apps

FREEWARE

https://nanocad.com/products/nanoCAD/download/

nanoCAD is a multi-purpose free drafting software
nanoCAD is an easy-to-use CAD application that delivers a great user experience by providing high performance, full capability, a classic interface and native .dwg format support. nanoCAD has been built to deliver design and project documentation for all industries. nanoCAD includes a full suite of basic and advanced tools, for creating industry-standard DWG-compatible CAD files. nanoCAD provides innovative, collaborative and customizable features to enhance your efficiency. nanoCAD includes several API's, allowing anything from routine task automation to complex CAD application development. All for free.