From the Info-Mac abstract file: TCPSerial is an Extension which creates a fake serial driver and attached modem which actually communicate via a TCP/IP connection rather than a phone line. The main reason for doing this is to allow programs that know how to communicate via a modem, but not via the Internet, to use the Internet. One example of such a program is Apple Remote Access (ARA). Using TCPSerial, it is possible to connect an ARA client to an ARA server via the Internet.
"I had high hopes for TCPSerial -- we'd been looking for a way to hook up two Macs which are both always on the Net (one at ISDN 112K, one at Switch 56K). TCPSerial is indeed easy to use, and it does work. But we found it painfully slow for ARA, definitely slower than an ARA link via 28.8 modems, and probably slower than 14.4. The performance may well be ARA's problem (it was never a speed demon). Regrettably, we're going to have to keep looking."
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Finally, take a look at ALEMIA if you think you know that name of an application, but aren't quite sure.
No, I don't accept reviews anymore for these older applications. With the creation of this page in the Orchard's late 2005 redesign, I only accept reviews for currently-developed applications that work on Mac OS X (or later....whatever that might be!!).