Observed arrival · 2026-08-27

DenseDrive Keeps Rewritten macOS Files Compressed

densedrive.app Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A macOS filesystem that compresses data during every write, preserving space after files are changed.

Landing page captured for the 2026-08-27 issue.

Field notes

DenseDrive operates at the filesystem layer rather than applying compression only when files are first stored, so rewritten data is processed again. The page reports a 4.05× reduction for a 14,885-file node_modules folder and 3.38× for a working data folder, but only 1.01× for installed games and video because those formats are already compressed. It also links to a technical account of building the filesystem with FSKit, including a data-corruption bug and an API contract the author initially missed.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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