Head to head
| DissectMac | JDiskReport | |
|---|---|---|
| Visualization | Treemap | Charts |
| Platform | macOS | Windows + Mac + Linux (Java) |
| Pricing | Freemium Free tier with paid unlocks at time of writing | Free Free of charge from JGoodies |
| Open source | No | No |
| 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 →
JDiskReport
Java statistics charts that find your most obsolete folders.
＋ JDiskReport: Strengths
- Rich statistics: size, age, and file-type distributions
- Free on every Java-capable platform
- Top-50 lists answer 'what's biggest' instantly
－ JDiskReport: Weaknesses
- Java UI feels alien on a modern Mac
- No deletion workflow — analysis only
- Aging codebase with infrequent updates
Read the review: JDiskReport → · JDiskReport See alternatives →
Verdict: DissectMac vs JDiskReport
Choose DissectMac if you want treemap visualization on macOS. Choose JDiskReport if you prefer charts views for free on Windows + Mac + Linux (Java). 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 JDiskReport?
DissectMac wins on treemap visualization for macOS; JDiskReport wins on charts views for Windows + Mac + Linux (Java). On price, Freemium (DissectMac) vs Free (JDiskReport). 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 JDiskReport wins on price.