With a globally distributed team DNSimple provides the tools your need to manage your domains. We offer both a carefully crafted web interface for managing your domains and DNS records, as well as an HTTP API with various SDKs (including Elixir) and open source plugins in Elixir (and Phoenix).
InfluxData delivers a modern open source platform built from the ground up for metrics and events (time-sensitive data). They are using Elixir to build InfluxCloud, their hosted database-as-a-service product.