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.
Uses chrome.debugger API to intercept Content-Range headers when webRequest can't.
Another treemap disk analyzer when DaisyDisk already dominates this space.
Edit scanned PDFs visually without OCR, like moving layers in Photoshop.
Charm-based TUI for disk usage when ncdu already dominates this space.
ncdu replacement with 2x speed and trash support, but ncdu already solved the problem well.