In case you missed it, ZWCAD 2018 users are updating to SP1 to get a faster and new-featured CAD. New features include a Design Center for inserting content, Block Editor, Layer Previous command, dimension inspection, and much, much more.
SP1 is available to ZWCAD 2018 users for free. Get the details >>
ZWCAD is built by ITC member ZWSOFT and is based on the IntelliCAD engine.