Bulletlog - Aggregate logs, discover and fix errors in real time
observIQ Cloud - The intuitive log management platform that you actually want to use.
Log Harvestor - Simple, modern & fast log management platform
logstash - logstash is a tool for managing events and logs.
Forevernote - Discover, preserve, & share your life stories
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