does anyone know how to keep an EA's source code remote. I want to share my EA but don't want them see the code.

Yes, we have a software that transmits your orders to clients. It works so that you place our master EA to your MetaTrader where you normally trade your EA and our master EA just copies your orders over to the central server. Then clients have our client EA that just reads the orders from the central server. It takes about 0.5 second to copy trade from you to all clients.

This way you do not need to give your EA to anyone.

where is this software?

Software that copies trades and re sends them to other EAs usually do not work well if instant signal with tight slippage is needed. Unless the EA uses pending orders, often you would be receiving the signal about less than a second late, provided there is no humps in the network.

One way to test (not the nest though) is to try to connecting to the remote computer via windows remote connection multiple times and see the speed the remote computer responds to your keyboard/mouse clicks.