are there other programs that will let me manage my network
Log into the router from a web browser. It's usually through the default gateway.
such as viewing available networks
Have you not looked at the wireless icon in the notification area? If you click on it, it'll give you a list of all available networks that a publicly
adjusting settings, etc?
Need to change the settings on the wireless adapter? Left pane in Network and Sharing Center is a item called "Change adapter settings"
Need to configure the saved networks? Same left panel under "Manage Wireless Networks". Unless this is Windows 8, if it is, you need a third party tool to access that list. But if you're already connected to a network, just pull up the list, right click and select "View Connection Properties".
And again, managing your network is through your router.