Head to head
| SpacePeek | SquirrelDisk | |
|---|---|---|
| Visualization | List | Sunburst |
| Platform | macOS | macOS + Windows + Linux |
| Pricing | Freemium Free tier; Pro is a cheap one-time unlock | 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.
SpacePeek
A read-only Quick Look inspector for folders and archives.
＋ SpacePeek: Strengths
- Read-only by design — it cannot delete anything, so it's extra safe
- Peeks inside folders and archives with Finder-style Quick Look
- Very cheap Pro unlock
－ SpacePeek: Weaknesses
- Read-only means no cleanup workflow at all
- No sunburst or treemap overview of a whole drive
- Niche tool, not a full disk analyzer
Read the review: SpacePeek → · SpacePeek 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: SpacePeek vs SquirrelDisk
Choose SpacePeek if you want list 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, SpacePeek or SquirrelDisk?
SpacePeek wins on list visualization for macOS; SquirrelDisk wins on sunburst views for macOS + Windows + Linux. On price, Freemium (SpacePeek) 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 SpacePeek or SquirrelDisk wins on price.