ManageEngine WiFi Manager v.4

WiFi Manager is a combined WLAN security and management software for 802.11 a/b/g networks. It presents a Web-based view of all wireless networks operating in your building, access points available inside each network, status of those access points, channel at which they operate, mobile clients connected to them and their signal strength/ noise values, and association history.

You can configure/ upgrade firmware of access points using this software. And once integrated with RF sensors, WiFi Manager becomes a full-fledged wireless IDS system generating more than 40 different security alarms on rogue APs, intrusions, denial-of-service attacks, and vulnerabilities. WiFi Manager can monitor both wired and wireless LANs. It automatically discovers access points, routers, switches, servers, desktops, and printers, and monitors them for availability, health, errors, and utilization.

Note: Free Edition manages 3 access points and 10 wired devices.