There was nothing more frustrating than trying to download a file of a few megabytes back in the long, long ago, and then something would glitch out at 90%, and

There was nothing more frustrating than trying to download a file of a few megabytes back in the long, long ago, and then something would glitch out at 90%, and you'd have to start over again on your dial-up connection. Download managers that could resume an interrupted download were a game changer. Modern browsers still suck at dealing with downloads if you have a flaky connection that gets interrupted, but we mostly don't care because you can slurp gigabytes in seconds on fiber connections, so it takes a really, really jacked up VPN connection or intrusive proxy to make an impact.