- Credo: Static analysis tool https://github.com/rrrene/credo
- hackney: HTTP client https://github.com/benoitc/hackney
- asdf: Version manager (for elixir and others) https://github.com/asdf-vm/asdf-elixir
- Mix: Build tool for elixir https://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html
- Poison JSON encoder tool https://github.com/devinus/poison
- The order of the messages in the mailbox is always kept in the order they