I've been very happy with AppSignal for my Elixir projects (introduced them to 3 paying customers). I especially like their request-based pricing model. It mak

I've been very happy with AppSignal for my Elixir projects (introduced them to 3 paying customers). I especially like their request-based pricing model. It makes it a no brainer to put it on every rails/elixir project under one account (per paying customer). Disclaimer: they have sent me a box of delicious cookies for creating an open source plugin (ember deploy plugin for automatically uploading source maps to AppSignal). But I have liked them way before that :)