DraftSight is #1 choice of free, non-libre Linux/Mac/Windows 2-D CAD users. If you prefer libre software, you can consider QCAD or LibreCAD.
How to install Draftsight 2-D AutoCAD-like software on Ubuntu Linux
DraftSight 2-D CAD actually outputs PDF even when EPS is selected. Convert PDF to SVG vector graphics for high resolution diagram on a webpage without downlo...
A certificate expiring March 1, 2017 requires all DraftSight users on Windows to upgrade.