ESE (reads "easy") stands for "Enterprise SmartEiffel". Its aim is to build enterprise-level tools and libraries for SmartEiffel (http://smarteiffel.loria.fr)
MERMAID is an object-oriented domain modeling tool to create enterprise models using an UML class diagram, an object-event table and finite state machines. The CASE tool checks view consistency, has XMI support and code generation abilities.