#1
Xcode
DerivedDataSimulatorsArchives
v1.0 — Notarized for macOS 15+
Keep Your Mac Clean
Xcode · dev tools · caches — one scan.
No networkNo telemetryOpen source
MacSlimber
Ready to scan
0%
Xcode4.2 GB
Dev Tools2.1 GB
App Caches3.8 GB
System1.4 GB
Trash0.9 GB
0.0 GB
Typical savings
0
Categories
0s
Scan time
0
Telemetry
Screenshots
Built for macOS, designed for clarity
Review every category before you delete. No surprises.
MacSlimber
12.4 GB foundScan
Xcode
4.2 GBDev Tools
2.1 GBApp Caches
3.8 GBSystem
1.4 GBScan overview
See all five categories and total reclaimable space at a glance.
MacSlimber
Xcode · DerivedData
~/Library/Developer/Xcode/DerivedData/App-abc
~/Library/Developer/Xcode/DerivedData/App-def
Safe to delete
Category detail
Expand each group to review paths, sizes, and safety labels.
MacSlimber
✓
12.4 GB
reclaimed
Clean results
Confirm what was removed and how much space you recovered.
Features
Five categories, one scan
Dev Tools
npmpnpmHomebrewGradle
App Caches
CursorChromeSlackVS Code
System Caches
User cachesLogsTemp files
Trash & Downloads
>100MB>30 daysTrash
Coming soon
DockerDuplicatesScheduler
How it works
Scan, review, reclaim
Enable Full Disk Access once in System Settings so MacSlimber can scan protected developer folders.
System Settings
Full Disk Access
MacSlimber✓
Scanning…67%
12.4 GB
reclaimed
Security & privacy
Your data stays yours
Full Disk Access required
FDA is only used to read cache folders macOS hides from sandboxed apps. MacSlimber never uploads your files.
No network access
The app cannot make outbound connections. Your file list never leaves your Mac.
No telemetry
No analytics, crash reporters, or usage tracking of any kind.
Notarized by Apple
Signed and notarized so Gatekeeper trusts the download.
Hardened Runtime
Memory protections and runtime hardening enabled in the release build.
Transparent paths
Every item shows the exact file path before you delete it.
Safe by default
Risky items are flagged. You choose what to remove.
Built for you
What MacSlimber offers
Everything you need to reclaim disk space — purpose-built for macOS developers.
Xcode & dev caches
DerivedData, simulators, npm, pnpm, Homebrew, and Gradle — one scan.
Transparent paths
See the exact file path and size before anything is deleted.
No network, no telemetry
Your data stays on your Mac. No accounts or subscriptions.
Notarized & free
Apple-verified direct download. Open source on GitHub.
FAQ
Common questions
MacSlimber only targets caches, build artifacts, and junk files — not your source code. Every item shows its full path before deletion. Risky categories are flagged so you can review first.
Distribution
Why not the App Store?
App Store
Sandbox
Direct
Notarized by Apple · Gatekeeper verified
App Sandbox blocks:
- ~/Library/Developer/Xcode/DerivedData
- ~/Library/Developer/CoreSimulator/Devices
- ~/.npm, ~/.gradle, ~/.m2
- ~/Library/Caches (other apps)
- ~/.Trash
Ready to reclaim your disk?
Version 1.0File size 1.4 MBReleased Jun 5, 2026
SHA-256
925b203e23887994f9175b7f333bcfcdbdefd606ad516b5ac54da2162bd00437
Verify the checksum on the release page before installing.
macOS 15.0+ · Apple Silicon & Intel · Free
01
Download
Get the notarized .dmg from the button above.
02
Install
Open the .dmg and drag MacSlimber to Applications.
03
Grant access
Allow Full Disk Access in System Settings on first launch.