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PerfView vs dotUltimate: catalog facts
PerfView	dotUltimate
Free Free and open source from Microsoft.	Paid Commercial JetBrains product; see the website for current pricing.
Windows	Windows, macOS, Linux
Analyses both CPU and memory performance issues Free tool maintained by Microsoft	Covers editing, profiling and code coverage in one package Works with Visual Studio, Visual Studio Code or a standalone cross-platform IDE
Windows only Steep learning curve for people new to profiling	Commercial product, not free Aimed specifically at .NET and game development
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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