You don't need a "modded" version.
Just "Enable coin control features" in the "Wallet" section of "Preferences".
Then in the "Send" section of the wallet, click the "Inputs" button. You'll see all the unspent outputs that the wallet currently controls.
If you don't want to do that, you can instead choose the "Debug Window" under the "Help" menu. Then in the "Console" type:
You should receive a list of all confirmed unspent outputs that the wallet currently controls.
Totally forgot about that command in wallet and coin control features was trying to remember where it was. inputs gives much better idea of what is in addresses but mission to work though in Inputs for unspent. Least I have an idea now what is in what address and what been used when.
The problem with listunspent is that it doesn't show how much coin is held by each address, it only shows the unspent outputs that the wallet can spend from. I think that the OP is looking for a modification/client that will just show him how much he can spend from each address.
Indeed that is what am looking for in some way. With listunspent and Inputs section and selecting I guess it qill give me some sort of idea to begin with and can move out of dormant addresses back up private keys and remove old wallets that are not in use and keep ones am using. Would be nice just to have in main window where addresses are listed and box next to address with amount in each one and then sort by amount of coin in wallet etc.