Microsoft rather quietly has released PerfView – “a performance analysis tool focusing on ETW information (ETL files) as well as CLR memory information (heap dumps). It can collect and view ETL files as well as XPERF CSV files. Powerful grouping operators allow you to understand performance profiles in ways other tools can’t. PerfView is used internally at Microsoft by a number of teams and is the primary performance investigation tool on the .NET Runtime team.” Found it by accident, while reading an article about performance improvements in Visual Studio 2010 that mentioned Publication of the PerfView performance analysis tool!
It is in a functionality way related to the CLR Profiler that “allows developers to see the allocation profile of their managed applications.” Both tools are useful in optimizing memory usage, except that PerfView is supporting also native and mixed applications.