If your request refers to the (a functional language) rather than the instant messenger, there are specific academic papers such as "Regular Expressions and Automata using Miranda" on ResearchGate , which discusses implementing non-deterministic finite automata within that language. Miranda IM download | SourceForge.net
If you are looking to download the program or its technical documentation, you can visit these primary sources:
: Miranda IM is frequently referenced in discussions regarding resource-efficient software . It was designed as a multi-protocol instant messenger that uses minimal memory and requires no installation, making it a standard reference for portable and modular design. Where to Download & Find Documentation
: The current active version is Miranda NG, which offers updated plugins and built-in SSL support.