I saw that were many posts about internet browsers, so i thought a poll would be nice to see everyone's favorite. These are the ones i know, help me if i forgot any.
I was a sysprog by profession before I quit the rat-race for a small holding/brewery/water mill in very rural Wales (I've since moved back to England, but not to sysprogging).
I worked for the Big Blue creating/installing/maintaining MVS OS's on a machine room of very large mainframes, to each of which were connected several hundred end-users. (weird to think now, all these years later, that my PC could out perform all of them but only supports one user. I used to write software in those days in 360/370 assembler where applications were 1 or 2 kbytes, and I'd fit 8 switches in a single byte and test them with a mask just to save space.)
When I first joined the company 1 Mbyte of storage was a set of doughnut shaped magnets, threaded in 3 planes with wires, inside a glass-sided box the size of the cottage I now live in !
When I left 20 years later, I'd become a performance specialist, tuning the software, getting the engineeers to reconfigure the hardware, squeezing sub-second response times for the end-users out of ever more constrained resources, and constantly rising demand.
That's why it offends my sensibilities so much to see the sheer profligacy and inefficiency of successive generations of Windows etc.