Alternatives to PageProof

SketchDeck

Design

Strongest fit on feature parity. The most direct functional swap. Shares design feature signature, comparable workflows, and a similar audit-score band — switch costs are usually lowest here.

Markup Hero - Screenshot & Annotate

Design

Wider scope, slightly different focus. Wider feature surface than the source app's focus area. Useful if you're shopping design alongside adjacent capabilities you'd otherwise integrate separately.

Slickplan

Design

Established alternative with audit-grade listing. Established option with the rating + review depth to be vendor-evaluated. Best when running this category at scale and you can't afford early-stage product surprises.