If you primarily need preflight (not editing individual objects), callas pdfToolbox is the closest technical alternative. For interactive repair, Adobe Acrobat Pro is the simplest switch.

: A long-standing leader for preflighting native files (InDesign, QuarkXPress) and PDFs. It is known for its thorough reporting, though it lacks PitStop's object-level editing capabilities.

if you have a technical team and want a cost-effective, highly customizable automation engine.