Log Owl - Open-source, privacy-focused error tracking and analytics

Logmatic - Logmatic is a log centralization, analytics & visualization platform to improve software & business performance.

Olvy - Announce new features with beautiful and effective in-app widgets and standalone pages with our powerful release note tool, and see your release feedback turn into insights.

Serilog - Backend Development and Utilities

Hawk - Hawk provides visual user tracking and error reporting with live screen view, deep filtering and robust access control.

LogTailApp - LogTail is a local and remote (SSH) log file viewer and monitoring application for Mac OS X. It is a pure, modern, document-based Cocoa App