This article is from the MachTen & CodeBuilder FAQ, by Jaime Julca email@example.com with numerous contributions by others.
Virtually all Macintosh applications work with MachTen. Occasionally an init
or system extension will conflict with MachTen. Tenon's policy is to work
toward eliminating incompatibilities if any are found.
When MacintoshTCP applications run with MachTen, they automatically use
Tenon's TCP stack. If you want to run Macintosh Internet servers with
MachTen, such as ftpd, you must make sure that the equivalent UNIX server
daemon is not listening on the same port.