Erlang / Elixir

Elixir here means the production server runs the application on the Erlang virtual machine, usually as a release that bundles the runtime with the compiled code. Releases make the host requirement small, but the host has to allow a long-running process and, for clustering, connections between nodes. A record carries this value when its documentation names an Elixir deployment for the production server. The matching install requirement is Erlang VM under runtime. Phoenix is an example.

1 project needs Erlang / Elixir to host, listed alphabetically. All of them web frameworks, all written in Elixir. 77 records do not record this field, and cannot appear here either way. For 206 the question does not apply. Counts only projects with momentum; the full list has the rest.