Screenshots
Click on image to enlarge.

Using Big Sister you can set up your own views. Big Sister supports grouping, summarizing, graphical displays and other features. See how your entry page might look like:
Hyperlinks on the entry page may guide you through more detailed views like this one
Big Sister provides detailed status information per tested host/service:
Status changes are logged and history data is available:
Big Sister can send alarms on status changes via mail or pager. The alarm summary page lists pending alarms and eases use in collaborate environments via acknowledging mechanisms:
View alarm details, acknowledge or delete them:
Big Sister logs quite some performance data:
Performance data is visualized via RRDTool:
The way how Big Sister displays its information is highly configurable. This is an example of an alternate look - the Big Brother look-alike:
Big Sister stores collected performance data in a relational database and provides simple statistical analysis.