LNAV - The Log File Navigator (lnav) is an advanced log file viewer for the console.
Log Transformer - Monitor log files in real time using customized filter and formatting rules. Use regular expressions to apply color and formatting. Go even further by filtering out unwanted text or lines. https://logtransformer.com
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
json-log-viewer - Powerful terminal based viewer for JSON logs using ncurses.
macOS Console - An application to view live log files.