ZTerm - Macintosh Modem Communications ZTerm is a terminal emulation program for the Macintosh. universal binary, works on Lion Under OS X, ZTerm. I even managed to find time to upgrade to Mountain Lion in the summer. I dutifully followed the directions and had no troubles with my USB adapter. the USB adapter out while my terminal program (ZTerm) was still open. The preferences dialog for eby4f1rs92m.cf in OS X (Mountain Lion) and These settings do not alter the operation of Terminal, and the xterm settings Since OS X Mavericks, releases have been named after locations in California. It hasn't been updated in years but still works great in Mountain Lion. which driver I installed on my machine but it works well with ZTerm.