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dotTrace vs PerfView: catalog facts
dotTrace	PerfView
Paid Commercial license with a free 30-day trial, also included in dotUltimate.	Free Free and open source from Microsoft.
Windows	Windows
Timeline mode for UI freezes, garbage collection and I/O problems Profiles SQL queries and HTTP requests	Analyses both CPU and memory performance issues Free tool maintained by Microsoft
Paid after the 30-day trial Focused on .NET only; memory profiling is a separate product, dotMemory	Windows only Steep learning curve for people new to profiling
Downloadable app	Downloadable app
Closed source	Open source
License: Proprietary	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.