Build of the 0.8.1 code (svn revision 36823) which included support for both nLog and log4net that has been in SVN for a while but didn't have a binary release made.
Included in the zip is the Sentinel.exe and default settings, plus a simple nlogtester.exe that uses nLog to throw UDP messages at Sentinel (should both be defaulting to port 9999).
Next release 0.9 due soon that introduces a plug-in architecture and will provide at least three 'providers' log4net, nLog and monitoring of a file directly. The plug architecture allows multiple providers to be channelled into a single "Log". The log can be visualised by multiple 'views' (currently a traditional grid style log and a heart-beat graph that plots the number of debug/error/warnings and scrolls them across the page - very useful for diagnostics of something that has a repeated pattern, as you tend to watch the graph rather than the log entries). I'm currently trying to get the rather complex 'new logger wizard' sorted. Target date for 0.9 is early April.