Language · 1986–now · Object Wave
Erlang / OTP
Let it crash, supervision trees, and nine-nines uptime. The telecom substrate that outlived every "modern" backend pitch.
Why Erlang / OTP stuck
Erlang stuck because fault tolerance at the process level was the right abstraction for switches and still is for WhatsApp-scale messaging. It never went mainstream because the syntax is a hiring filter and the JVM ate enterprise middleware. Admiration arrives late; adoption never left the niches that needed it.
Compare with
Related
Framework · 2014–now
Phoenix / LiveView
Real-time Elixir on the BEAM with HTML-over-the-wire before it was cool. Small but fiercely loyal community.
Language · 2019–now
Gleam
Erlang semantics with friendly syntax on the BEAM. The language your functional meetup loves and your employer has never heard of.
Language · 2011–now
Elixir
BEAM reliability with modern syntax. Phoenix and LiveView keep the torch for pragmatic functional web.