Despite being vastly superior to its predecessor, digital cassettes never really took off... except, for some reason, in the Netherlands.
Sega's 8-bit system, the Sega Master System, failed to compete head-on with the original Nintendo Entertainment System in both the United States and Japan; it wasn't until their release of the Sega Genesis that the infamous rivalry began. However, the Master System sold very well in both Europe and Brazil.
The Commodore Amiga series sold much better overseas than in the U.S., mainly due to its lower price tag in comparison to Macs and DOS/Windows PCs at the time.
The Laserdisc optical disc format was developed by Dutch corporation Phillips, and produced by Phillips and American corporation MCA. It never caught on in the US or Europe due to the cost and read-only nature; but became the dominant video format in Japan, Hong Kong, Singapore, and the more affluent regions of Southeast Asia. Production of laserdiscs continued until the end of 2001, in Japan; and production of players continued to the beginning of 2009, also in Japan. They are still popular with collectors, due to the number films and other media on laserdisc which have never been released on DVD, and the increasing scarcity of playable VHS releases.
Similarly, the VideoCD (not to be confused with the incompatible CD-Video format). It was extremely popular in exactly one continent: Asia. Due to its low price and region-free nature, it was widely used in Asia and even today, Videos are often released in VideoCD, DVD and Blu-Ray formats. In the US and Europe, it failed to catch on, as it was released roughly three years before DVDs entered the market, and featured almost no copy-protection (if the disc does have copy-protection, it's trivially easy to bypass) and is completely region-free, making the format extremely undesirable to film studios. Feature wise, the requirement of switching discs midway through a film, the inability to store closed captioning and inability to store a second audio track without sacrificing quality (you could only either have two mono audio tracks or a stereo one) put off many consumers.
It was then replaced with pirated DVDs.
AM stereo was more popular in Canada (thanks to regulations that forbade all-hit formats on FM) and Japan than in the US.
The Opera web browser became extremely popular in Russia and other ex-USSR countires in the late 90s due to speed and reliability on crappy dial-up lines. It still keeps a 30-50% share - compared to 2% worldwide.
According to That Other Wiki, Mozilla Firefox, which is developed by the United States-based Mozilla Corporation (itself a subsidiary of the Mozilla Foundation, based in the same country) is the most popular Web browser in Germany, Poland, and Indonesia.
Despite being designed by a Dutch firm (Philips), the Philips Residium FGS225 (image here) is more popular in the United Kingdom than its native Netherlands, with the likes of Manchester, Kirklees, Barnsley, Wigan and (recently) Warrington city councils using them due to their environmentally-friendly credentials. In Holland, they prefer Retraux "gas-light"-style streetlights, which give a Values Dissonance to the street.
Video Phones never did take off in the west like the western science fiction of the sixties believe it would, especially after the 90s when people started wanting more privacy. However, video phones are incredibly huge in Japan and South Korea. This is due to the fact that these cultures considers it polite that one to maintain eye contact while having a conversationnote Each country having one of the best telecommunication infrastructures in the world may have helped, too. Outside of these two countries, one would only find video phones at meeting rooms in huge corporations, in the form of video teleconferencing.
Speccy was huge in UK, true, but it was essentially THE home computer in the ex-USSR. Its cheap off-the-shelf construction made it trivially easy to clone, and the lack of the expensive custom chips meant that anyone who knew from which end to hold a soldering iron can make them in his basement or garage.
Russians love dash-cams. An average Russian Drives Like Crazy, and in the aftermath of a vehicular mischief it helps that while not accepted as evidence at court, dashcam footage is accepted at a lower-level police arbitrage commissions and insurance companies.
The once almighty WordPerfect word processor, no longer widely used anywhere else, is still widely used amongst lawyers in English-speaking countries, a combination of the original vendor listening to lawyers, thus having functions they needed andar other word processors didn't have, and conservatism, which makes lawyers not change. Read more here. It must be notes that this has been dwindling in the last few years, as Microsoft Word is now the standard, it includes all the functions lawyers need and Microsoft sells it competitively, in bundles with other software.