ULogViewer
Cross-Platform (Windows/macOS/Linux) Universal Log Viewer which supports reading and parsing various type of logs. You can also define your own profile to parse and show logs.
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。
📥 Download 2026.0 Preview
Windows
macOS
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Linux
📥 Download 4.1.7.411
Windows
macOS
Linux
📣 What's Change in 2026.0 Preview
- Support filtering log profiles in the
Select log profiledialog. - 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# 14as scripting language. - Improve user experience of the
Select log profiledialog and log chart.
📣 What's Change in 4.1
- Support setting text filter as
exclusionaryto filter logs without text matched by the pattern. - Support formatting CLEF data when reading raw logs through
Standard output (stdout),FileandHTTP. - Add
CLEF Filesbuilt-in log profile. - Support specifying default log level in case of value of raw log level cannot be mapped or not presented.
- Add
Error,ExceptionandWarninglog 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.