A couple years ago PCWorld took a look at some ancient tools and , but were still clinging to life. Many of the technologies cited in that piece are more of less dead at this point. But, some--namely fax machines--are stubbornly still in use.

There are some industries--like real estate and financial institutions--that still . Technically, there isn't any real difference between faxing, which scans an image of a document and transmits it over a phone line, or simply scanning the document and zipping it over as an email attachment, or by sharing it from a . The difference is that many people have scanners, but almost nobody has an actual fax machine any more.

surveyed more than 7,000 professionals to ask which are most likely to go extinct soon. Audio cassette recorders topped the list for 79 percent of the respondents. Number two on the list is the tenacious fax machine with 71 percent.

Here's the rest of the top 10:

· The Rolodex (58 percent)