Doublecad Xt 6 ((free)) Direct

Click the Door tool. Select the left wall. The software automatically trims the wall line and places the door with an arc swing.

DoubleCAD XT 6 is a powerful, free 2D computer-aided design (CAD) application developed by IMSI/Design, the creators of TurboCAD. While it is an older software package, it remains a notable choice for professionals and hobbyists looking for a robust, "AutoCAD LT work-alike" without the subscription costs associated with modern CAD platforms.