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ProcessSpy vs TestFlows Machine

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ProcessSpy compared with TestFlows Machine
DetailProcessSpy logo ProcessSpyTestFlows Machine logo TestFlows Machine
What it doesThe native macOS alternative to Process Explorer with advanced process monitoring capabilities Run your programs deterministically. Record, replay, and branch your runs.
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree version with core features; paid license $34.99 USD for lifetime updates and unlimited devices. Also available on Setapp for $14.99/year or $34.99 lifetime. Free: €0 with ₡3 credits included each month (about 20 vCPU-hours). Starter: €10/month with ₡25 credits (about 166 vCPU-hours). Plus: €25/month with ₡65 credits (about 433 vCPU-hours). Pro: €50/month with ₡150 credits (about 1,000 vCPU-hours). Dedicated: contact sales. Usage credits: €1 a credit, pu
Key features
  • Per-process CPU and memory history
  • Process tree visualization with XPC service linking
  • Real-time disk I/O and memory pressure monitoring
  • CPU QoS breakdown and memory footprint analysis
  • Menu bar dashboard for system health tracking
  • Multi-property and regex search
  • JavaScript-based advanced filters
  • Deep process inspection with signature and entitlements info
  • CSV export for historical data and reporting
  • Record runs with non-deterministic inputs pinned down
  • Replay runs instruction-by-instruction
  • Checkpoint and fork from any point
  • Fault injection for disk, network, clock, containers and system calls
  • Built-in debugger for machine programs
  • Machine client and Python SDK
  • Cloud storage for runs and disk images
  • Multiple simultaneous sessions with configurable vCPUs
  • Configurable session disk up to 256G
What makes it different
  • Visualize complex process hierarchies with automatic XPC service linking
  • Advanced JavaScript filtering and multi-property regex search
  • Historical performance tracking with peak and average metrics
  • Retains information about finished processes for later analysis
  • Fully private with no data collection or remote transmission
  • Deterministic replay of program runs with identical outcomes
  • Fork and branch from any point without losing original timeline
  • Comprehensive fault injection testing built-in
  • Pay-as-you-go usage credits with free plan available
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)45 +1 (up) since last check2 no change since last check
Trust Flow (Majestic)254
Citation Flow (Majestic)2821
Referring domains (Majestic)26127

5 details filled in for both companies.

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