jq.erl JQ for Erlang/Elixir
jq, de-facto JSON processing standard. Based on the open-source core Xinyu has built a NIF binding which will then be integrated into EMQ X's rule engine as a data processing function.
Haskell-style functional programming language running on Erlang VM.
Snabbkaffe is a library that helps testing concurrent and distributed systems. It does so by moving the focus from /states/ to /effects/. Developers find bugs by looking at the logs, Snabbkaffe does the same and automates the process. It has advanced modes of testing: fault and scheduling injection. It aims for efficiency: run test scenario once, verify multiple properties.