Head to head
| DissectMac | SquirrelDisk | |
|---|---|---|
| Visualization | Treemap | Sunburst |
| Platform | macOS | macOS + Windows + Linux |
| Pricing | Freemium Free tier with paid unlocks at time of writing | Open source Free and open source (AGPL-3.0) |
| Open source | No | Yes |
| Native Mac | Yes | No |
Updated September 2026 · Prices change — please verify with the vendor.
DissectMac
A fast local treemap with uninstaller and live monitoring.
＋ DissectMac: Strengths
- Fast local treemaps with live disk monitoring
- Bundled uninstaller covers app leftovers
- Free tier for basic analysis
－ DissectMac: Weaknesses
- Treemap-only visualization; no sunburst or list-first mode
- Monitoring features overlap with free macOS tools
- Young product with a thin review record
Read the review: DissectMac → · DissectMac See alternatives →
SquirrelDisk
The easiest open-source sunburst for hunting huge files.
＋ SquirrelDisk: Strengths
- Free and open source on every desktop OS
- Genuinely easy sunburst experience
- No account, no telemetry, no upsell
－ SquirrelDisk: Weaknesses
- Java-based UI rather than native Mac controls
- No collector tray or staged-removal workflow
- Solo-maintainer pace on features and fixes
Read the review: SquirrelDisk → · SquirrelDisk See alternatives →
Verdict: DissectMac vs SquirrelDisk
Choose DissectMac if you want treemap visualization on macOS. Choose SquirrelDisk if you prefer sunburst views for free on macOS + Windows + Linux. And if you want a native Mac sunburst with a staged collector and zero telemetry, NullDisk is the third option that beats both on workflow.
Frequently asked questions
Which is better, DissectMac or SquirrelDisk?
DissectMac wins on treemap visualization for macOS; SquirrelDisk wins on sunburst views for macOS + Windows + Linux. On price, Freemium (DissectMac) vs Open source (SquirrelDisk). The honest answer depends on your OS and whether you prefer maps or lists — read the verdict below.
Is there something better than both?
If you want a native Mac sunburst with allocated-size honesty, a staged removal collector, and zero data collection, NullDisk beats both on workflow — even where DissectMac or SquirrelDisk wins on price.