HERE'S HOW TO ADD 4.3 SUPPORT:
Make sure your USB drivers are fully updated! And have the 4.3 drivers as well through the SDK manager.
In developer options on your phone enable USB debugging, and for Root Access change it to "Apps and ADB"
run adb devices and I don't know if your phone does this, but mine prompted me on the phone to accept giving the computer adb access.
1. Open the root folder you installed Android Commander. (ex: C:\Program Files (x86)\Android Commander)
Open the root folder you installed Android SDK (ex: C:\Program Files (x86)\Android\android-sdk)
2. In Android Commander folder open /Android Commander/bin
Delete aapt.exe, adb.exe, AdbWinApi.dll, and AdbWinUsbApi.dll
3. In your Android SDK folder, navigate to /android-sdk/platform-tools
Copy adb.exe, AdbWinApi.dll, and AdbWinUsbApi.dll to /Android Commander/bin (where you just deleted these files)
4. In your Android SDK folder, navigate to /android-sdk/build-tools/android-4.3
Copy aapt.exe to /Android Commander/bin (where you just deleted this file)
Your Android Commander should now find your device.
I'm glad to be of any assistance, this took a little bit of guessing and snooping around the SDK files but it seems quite logical, Android Commander hasn't been updated with 4.3 compatibility (and it doesn't look like it's gonna be) but as long as you keep the DLL files up to date with google's releases it should be alright.