What is the best mouse and keyboard sharing software?

If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For the first PC keyboard to work on the second computer, you need either to use hotkeys to switch focus, or to use the first PC mouse to move the cursor to the second computer. If the cursor is moved by the second PC mouse, the first PC keyboard focus will not switch, causing a confusion, when a situation where one keyboard works on both computers, but the other keyboard only works on one computer only.

UPDATE: Seems not to occur in latest v4 anymore: If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For the first PC keyboard to work on the second computer, you need either to use hotkeys to switch focus, or use the first PC mouse to move the cursor to the second computer. If the cursor is moved by the second PC mouse, the first PC keyboard focus will not switch, causing a confusingon, when a situation where one keyboard works on both computers, but the other keyboard only works on one computer only.

UPDATE: Seems not to occur in latest v4 anymore: If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For the first PC keyboard to work on the second computer, you need either to use hotkeys to switch focus, or use the first PC mouse to move the cursor to the second computer. If the cursor is moved by the second PC mouse, the first PC keyboard focus will not switch, causing a confusing situation where one keyboard works on both computers, but the other keyboard only works on one computer.

If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For the first PC keyboard to work on the second computer, you need either to use hotkeys to switch focus, or use the first PC mouse to move the cursor to the second computer. If the cursor is moved by the second PC mouse, the first PC keyboard focus will not switch, causing a confusion, whenng situation where one keyboard works on both computers, but anthe other keyboard only works on one computer only.

If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For first PC keyboard to work on second computer, you need either to use hotkeys to switch focus, or use first PC mouse to move cursor to the second computer. If cursor is moved by second PC mouse, first PC keyboard focus will not switch, causing confusion, when one keyboard works on both computers, but secondanother keyboard works on one computer only.

If you use 2 mice and 2 keyboards simultaneously, there are issues with keyboard focus. For first PC keyboard to work on second computer, you need either to use hotkeys to switch focus, or use first PC mouse to move cursor to the second computer. If cursor is moved by second PC mouse, first PC keyboard focus will not switch, causing confusion, when one keyboard works on both computers, but second keyboard works on one computer only.