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
nxlog - NXLog offers log management solutions for companies of all sizes.
glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
Kiwi Syslog Server - Kiwi Syslog Server prvides solution to centralize and simplify log message management across network devices and servers.
macOS Console - An application to view live log files.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...