I'll name and shame a few:
- IE8. I sometimes had to use it on my previous work computer with XP and only 512 MB RAM, because the maximum Chrome/-ium version was still outdated and threw protocol errors on some sites. FF would work better, but it used an enormous amount of resources for that old computer. Other alternative browsers had problems with protocols like Chrome. IE8 was more "reliable" on this configuration, but being extremely outdated, its rendering was awful and it leaked memory all over the place trying to open any slightly complex page.
- Code Writer. That W10 app was installed on the newer computer I was given at work. Don't be fooled by its pretty GUI, it freezes up trying to load any piece of a reasonably long source code file.
- Midori. I like open source software as much as the next person, but taking HALF AN HOUR to open the DuckDuckGo home page is nothing short of criminal.
- SimPE. This was a package editor for the old game The Sims 2 that helps you create new items or edit the existing ones. Years ago when I was a kid, I had read the warnings that stated it can damage the system, but wanted to use it badly enough to take that risk so I installed it anyway. My computer was working fine at first, but after turning it on the next time, it began acting like its system files were removed. I had to uninstall that piece of trash to fix the problem.