ERESYE means ERlang Expert SYstem Engine. It is a library to write expert systems and rule processing engines using the Erlang programming language. It allows to create multiple engines, each one with its own facts and rules to be processed.
OSERL (Open SMPP Erlang Library) is an erlang implementation of the Short Message Peer to Peer protocol, covering the entire specification (version 5.0). Forward and backward compatibilities guidelines were adopted.
Yaws is a small fast and beautiful HTTP 1.1 webserver with excellent support for generating dynamic content. Yaws has been moved to github. http://github.com/klacke/yaws/