Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
HTTP Headers - HTTP Headers allows you to quickly see the HTTP header information for the current URL.
klogg - klogg is the fork of glogg - the fast, smart log explorer.