"One of the joys of long-lived open standards is that anyone can implement them. That’s also one of the problems. Programs might be intermittently abandoned, resurrected, reincarnated, forked or reimplemented without a name change, taken over by a company intent on privatizing the standard, or thrown out an airlock. Sometimes, they’re even carefully maintained by people who care.
And somewhere on the Internet, every variant of every one of these programs is deployed in production."
