Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Developed by Ericsson
License: Open Source
Haskell is a purely functional programming language with a strong static type system and lazy evaluation, making it well-suited for complex mathematical computations and data analysis. In contrast, Erlang is designed for building concurrent, fault-tolerant systems, particularly in telecommunications, using an actor model for managing state and processes.