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What is Metis?

Metis is an automatic theorem prover for first order logic with equality.

Features of Metis

Project Status

Metis is being maintained: the latest version is Metis 2.3 (release 20160714). Metis is free software, released under the MIT License. Check out the development version to adapt Metis for your own applications.


To report bugs, request features, or obtain help using Metis, please email

Metis (the moon of Jupiter)