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MSBuild Structured Log Viewer is a diagnostic utility published by Kirill Osenkov that accepts an MSBuild logger switch to capture exhaustive build telemetry and then displays the resulting .binlog files through a WPF tree interface. Developers invoke the tool by adding the /bl flag to any msbuild or dotnet build command; the logger serializes every target, task, property, item, metadata, and timing event into a compact binary format that can later be expanded and filtered inside the viewer. Typical use cases include locating slow-running targets, discovering implicit package references, comparing before-and-after build graphs when migrating SDKs, and sharing reproducible build traces with teammates or support channels. The viewer supports incremental search, timeline charts, critical-path analysis, double-click navigation to source files, and export to XML or structured JSON for further scripting. Since its first release the program has evolved through 59 public builds, with the current 2.3.150 build adding .NET 8 compatibility, dark-theme support, and faster large-file rendering. The package is classified under Developer Tools → Debugging & Diagnostics and requires no installation: the single self-contained executable runs on any Windows machine with .NET 6 or later. MSBuild Structured Log Viewer is available for free on get.nero.com, where downloads are provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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