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ULogViewer

A cross-platform log viewer that supports reading, parsing, and analyzing various types of logs. Please visit the Website for more details.

跨平台日誌檢視器,支援多種形式之日誌讀取、解析與分析。請參閱 網站 以取得更多資訊。

ULogViewer

📥 Download 2026.0 Preview

Windows

macOS

Linux

📥 Download 4.1.7.411

Windows

macOS

Linux

📣 What's Change in 2026.0 Preview

  • Support filtering log profiles in the Select log profile dialog.
  • Support temporarily showing raw log lines even when log patterns are defined.
  • Support filtering logs by multiple log levels.
  • Support editing visible log properties of the current non-built-in log profile in the log viewer.
  • Support importing application data from an existing ULogViewer instance.
  • Support using C# 14 as scripting language.
  • Improve user experience of the Select log profile dialog and log chart.

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📣 What's Change in 4.1

  • Support setting text filter as exclusionary to filter logs without text matched by the pattern.
  • Support formatting CLEF data when reading raw logs through Standard output (stdout), File and HTTP.
  • Add CLEF Files built-in log profile.
  • Support specifying default log level in case of value of raw log level cannot be mapped or not presented.
  • Add Error, Exception and Warning log properties.
  • Use different colors for different log levels.
  • Add more icons for log profile.
  • Allow specifying locale of time span/timestamp for log reading and writing.

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🤝 Dependencies