Librecad -

Her last CAD subscription had expired at midnight. The screen of her old laptop now displayed a cold, gray demand for renewal: $310. For the year. Elena did the math. That was two months of groceries for her and her son, Leo. That was the emergency root canal she’d been putting off. That was simply too much.

She leaned back. The laptop fan hummed a gentle, tired song. Leo was asleep on the couch, his own laptop open to a screen full of code he was teaching himself.

“Try this,” Leo said, sliding a battered flash drive across the table. On it, scratched in permanent marker, were two words: LibreCAD.