Affinity Photo is a professional desktop raster editor that offers near-Photoshop feature parity for a single one-time payment rather than an Adobe subscription. It runs on Windows and macOS (there is no native Linux build).
We loved its performance and value: for a one-off $69.99 you get a genuinely capable Photoshop replacement. It lacks some of the newest AI-based tools, but the simple one-time pricing makes it one of the easiest ways to escape recurring Creative Cloud fees.