The complete app, free and forever: no locked features, no expiry, and the code published. There's nothing to buy.
I'm Marco Sumari, a civil engineer and GNU/Linux user. I develop IngeTrazo in my evenings and weekends, and I share it freely so anyone can model and draw without paying for licenses.
IngeTrazo isn't alone: in the same family we're developing IngeCAD, 2D drafting with add-ons for civil engineering (surveying and terrain today; later roads, drainage, canals…), and IngePresupuestos, construction cost estimating. The whole ecosystem was born as a free alternative so that GNU/Linux users like us have tools to work with, and today it also runs on Windows. A contribution here supports all three.
If it saved you hours of work, help us keep maintaining and improving them.