Viper is a log viewer designed for tailing log files of different formats.

• Realtime "tail -f" style updates
• Tail multiple log files concurrently
• Support for common java.util.logging XML and text format (more to come)
• Support for uninterrupted reading from log files that rotate without application impact
  • No file locks taken, even on Windows
• Highlighting of log entries based on severity
• Realtime filtering based on log item severity
• Realtime filtering using convenient text search (e.g. "12:45 warning user dave login")
• Responsive user interface
• Viewing of log item details, including any exception stack traces
• Double-click opening of other log files in the same instance
• Drag-and-drop opening of log files
• Ability to temporarily hide new items using freeze button