Open Satchel – local-first PDF editor (early)
Local-first PDF editing that respects your filesystem is a rare find today.

PDF-only pattern matching means max disk read speed, unlike PhotoRec's multi-format approach.
System administrators, data recovery specialists, forensics
PhotoRec · TestDisk · ext4magic
As a bonus, because it only handles PDF documents, the pattern recognision is super simple, allowing this program to scan through a disk at high speed, like the maximum read speed for your disk.
Hope people find it useful.
Local-first PDF editing that respects your filesystem is a rare find today.
Edit scanned PDFs visually without OCR, like moving layers in Photoshop.
ncdu replacement with 2x speed and trash support, but ncdu already solved the problem well.
Charm-based TUI for disk usage when ncdu already dominates this space.
Free PDF redaction when Adobe Acrobat and PDFtk already do this properly.
OCR for PDFs is useful, but Adobe and Google Drive already do this for free.