Shogi freeware called BCMShogi is available to downloard. It's not a software for you to play with a computer, but it's to analyze your games. If you play shogi at Shogidojo(SC24) or PlayOK, then your games(Kifu) are automatically recorded there and available to download to your local disks for a while. It can display them to replay and do some analysis on them. For more information, please read Rick7's post to Shogi Prospect Forum and the promotion video by the developer.