Wifinian is a Windows desktop app to enable the user to control Wi-Fi connections actively.

With Wifinian you can:

Connect to or disconnect from a wireless network.
Rename a wireless profile.
Change automatic connection (Auto-Connect) or automatic switch (Auto Switch) settings of a wireless profile.
Rush - Perform rescan of wireless networks in short intervals. The number indicates interval (sec).
Engage - Execute automatic connection depending on signal strength, order and automatic switch setting of wireless profiles. The number indicates the threshold of signal strength (%).
Reorder - Change the order (priority) of wireless profiles.

Note that while this app is portable, it does leave a few things behind that you might want to remove if you stop using the Wifinian.

The settings file will be created at: [C:\Users[user name]AppDataLocalWifinian and if you check "Start on sign in," a registry value will be added to HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRun