The ICOM remote software is wonderful for SSB use. You can not use a paddle or key with this software on CW, but a keyboard is available that works well. I have used it with a 705, and 7610 and know others using it with the 7300 with great results. For free software then try RemoteHams that does a great job on all of your rigs.
73,
Hank
K9LZJ, W9VW