WatchDog is great free software that helps you monitor what people are doing in a computer. You can control what programs can be used and which can’t by putting a block on them. You can also monitor and block websites that you don’t want people to access. Also you can check emails, chat sessions, website history and pretty much everything that is done on a certain computer. WatchDog records every single key stroke that is typed and takes screenshots so you can make sure if someone is making inappropriate use or your computer or want to spy on someone else.