C3 is a self-contained application with no runtime dependencies. No licensing servers, no dongles, no cloud validation. Your software keeps working forever, even if we shut down tomorrow. (DWG import optionally uses the free ODA File Converter as an external bridge; C3 itself runs without it, and every other format — DXF, Eagle, Gerber, SVG, PDF, .cadd — is handled natively.)

Your drawings are yours. C3’s native .cadd format is plain JSON — human-readable, inspectable with any text editor, and trivially parsed by any programming language. You can also export every drawing to DXF (R12, round-trip tested with AutoCAD, DraftSight, and LibreCAD), SVG, PDF, or Gerber RS-274X. No DRM. No encrypted container. No proprietary blob. If you ever move to another CAD program, your work moves with you.

Contact us for a personalized demo. We'll walk through your specific workflow and show you exactly how C3 handles your use case.

Import: DXF (R12–R2018+), Eagle .BRD (v6+), CADD95 (.C95), PNG/JPEG images. Export: DXF R12, Gerber RS-274X, Excellon drill, SVG/HTML, PDF. Native format: .cadd (JSON).

Yes — natively, on the canvas. Attach attribute data fields (designator, part number, rating…) to any symbol, and Extract Attributes → Table builds a live table from every placed instance: a grouped BOM with quantity counts, or a per-instance schedule. It’s a real C3 spreadsheet table — formulas, CSV export, printing — and one click refreshes it as the drawing changes. Attributes also round-trip with AutoCAD via DXF (ATTDEF/ATTRIB).

No. C3 is native macOS only (Apple Silicon and Intel). This isn't a port — it's designed specifically for Mac using SwiftUI and CoreGraphics.

No. Ever. We believe professional tools should be owned, not rented.

Every Gerber file passes UCAMCO validation. We've verified against Hardy's production boards that have been successfully manufactured for decades. Zero tolerance for errors.