Windows Phone Thoughts: Yet Another List of Technologies - Things That Eventually Vanished

Well, we've seen articles of 21 technological flops and and the best 50 tech products. What about products that came on strong and then disappeared as quickly as they came, or their creators just couldn't keep the product relevant and the company largely disappeared? I am not talking about things like the floppy drive, as that just was surpassed by newer better technology. I am thinking about things like the Netscape Browser, once king of the hill and was utterly crushed out of existence, or the Commodore Computing, that never could repeat the success of the Commodore 64. Here is my brief list:

*Netscape Browser - the first browser for the masses, based on Mosaic. It simply didn't survive the combined onslaught by Microsoft's Internet Explorer and the poor decisions by AOL after acquiring the company.
*Commodore Computing - The Commodore 64 was the first computer for home users to have real penetration into the market, but it was the last big product for Commodore. The 128 never took off and all subsequent products were relegated to niche status.
*PalmOS - You knew this would be in the list. Not the first mobile device on the market, but this is the one that established it, so effectively that even today, people think PDA and Palm Pilot are synonymous. However, The only thing left of PalmOS is a 5 year old platform being held together with spit and bailing wire to ineffectively keep up with today's mobile computing needs.
*Iomega's Zip Drive - Back in the day when the biggest portable media was a 1.44MB 3.5" floppy, Iomega came out with the Zip Drive, a disk that held 100MB of data. It was later increased to 250MB and 750MB sizes, but by then, CD-R's were becoming popular and far cheaper per MB. Iomega tried to keep its portable storage technology relevant with the 1GB Jazz drive, but it never took off. They are still in business, but they have nothing special and their stock price is a mere 3% of what it was in its heyday in the mid 90's.
*Big Online Service Companies - Compuserve/Prodigy/AOL - Compuserve really got the ball rolling with online access. Their IT support forums were critical to many users and developers trying to get the most out of their software, plus they had online stock market information, shopping and dozens of other features in one place, something unheard of at the time. Prodigy came a bit later and was moderately successful for the home user, then AOL came along and trounced them both, only to be relegated to an also ran by cheap broadband service from local phone and cable companies. In the mid-90's, most people needed these services to get online, avoiding tedious modem configurations, SLIP configurations and logon scripts. Now, you just plug your DSL/Cable modem into your PC's ethernet port and you have the whole internet available. No one seems to care about AOL's proprietary offerings anymore, turning AOL into just another service provider.
*Lotus 1-2-3 - This was the spreadsheet in the 80's and early 90's. Not using Lotus 1-2-3 back then was like not using a petroleum powered car today - it is possible, but not easy to do. It was available on a number of platforms, including DOS, Windows, OS/2, Unix and even IBM mainframes. They finally got a decent Windows version out with Lotus 1-2-3 for Windows version 4, but by then, it was too late. Their first version for Windows was an embarrassment, and V4 still didn't have a real programming language. Microsoft's Excel, on the other hand, had excellent Windows versions and included Visual Basic for Applications in 1993, a full 4 years before Lotus added LotusScript to its first 32 bit version of 1-2-3, called 1-2-3 97. By then, it was too late. Office 97 was out and development for 1-2-3 slowed and has almost completely stopped. IBM now owns it and you can find it on their web site, but I suspect the only reason IBM continues to fool with it and the rest of the SmartSuite package is to mollify a few of their key corporate customers that still use it.
*WordPerfect - Another example of the king of a product category. WordPerfect was the de facto standard word processor, especially in legal firms. In fact, today, there are still law firms that use WordPerfect for DOS because they have so many templates set up they have no desire to invest money in to convert to any Windows product. For the rest of the world though, they were too slow to embrace Windows and Microsoft Word took over as part of the Office suite of applications.
*Ashton Tate's DBIII - See Lotus 1-2-3 and WordPerfect above. :wink:

So, that is my quick list of flash-in-the-pans, but I am sure I missed a few. What products or companies can you think of that were the absolute king of the hill for their market and were pushed aside by something else, unable to stay relevant?