NetSpot - is the only professional app for wireless site surveys, Wi-Fi analysis, and troubleshooting on Mac OS X and Windows. It's a FREE Wi-Fi analyzer. No need to be a network expert to improve your home or office Wi-Fi today! All you need is your MacBook running Mac OS X 10.10+ or any laptop with Windows 7/8/10 on board and NetSpot which works over any 802.11 network.
Features
• Collect live Wi-Fi data from all surrounding networks
• See channel info, transmit rate, vendor, security type, band, etc.
• Customizable signal level and noise charts display changes in real time
• Discover mode is ideal to locate Wi-Fi issues in a specific area
• Locate your busiest and least occupied channels
• Color-coded dBm bars help quickly analyze all Wi-Fi networks
• Save historical data per each AP for later review
• Too many APs around? Find the needed network fast
• Create multiple zones per project to represent different areas, floors, levels, etc.
• Create any number of snapshots within each zone to quickly compare Wi-Fi configurations
• Automated troubleshooting heatmaps with extensive recommendations
• Simultaneous active and passive surveys can be conducted
• Export your project survey data reports in PDF or CSV
Download: 
NetSpot Enterprise 4.0.0.602.7z - 82.8 MB
NetSpot 4.0.0.602 Portable