Why use MachTens TCP stack instead of MacTCP?
MachTen’s TCP stack is from the Berkeley Reno sources and includes all the latest protocol improvements, such as Van Jacobsen’s performance enhancements. This TCP stack is more robust, better performing and more fully-featured than MacTCP. MachTen provides interoperability with applications that rely on MacTCP, such as MacX and Eudora, by trapping MacTCP internals with Tenon’s mactcp daemon. This means that MacTCP applications will automatically use MachTen’s TCP stack when MachTen is running.