1. JS+
    JS+: The JavaScript ecosystem (not the language!): Anyone else feels overwhelmed by the rate of rapid changes here?
  2. CSS
    CSS: This is moving in a nice click lately, with lots of useful new stuff enabled in the browsers
  3. HTML
    HTML: Started with 20 something "tags", now we have over 100 "elements", but I feel that I've been able to keep up with the pace of change here
  4. URLs
    URLs: Sadly they are frequently changing; links die. We should work hard to keep URLs unchanged, but that's not how it is
  5. HTTP
    HTTP: Gradually changed (http/2), but it kind of feels good that it doesn't constantly change underneath us
  6. TCP/IP
    TCP/IP: Deliberately dumb, simple, all it does is move packets around