inSSIDer has just been updated with a few improvements.
The Network Dashboard now has Configuration Observations and Performance Observations. The Configuration Observations will alert you to crowded channels, busy channels, and other configuration issues that could impact your network.
The Performance Observations use real-time packet analytics to analyze how busy each channel is, which clients are the busiest on your network, and if busy neighboring networks are impacting your network. Real-time packet analytics requires a MetaGeek Plus subscription and a supported packet capture adapter.