Ace, by DAISY
Ace, the Accessibility Checker for EPUB, is a tool developed by the DAISY Consortium to assist with the evaluation of accessibility features of EPUB publications.
Read more about the Ace project on Inclusive Publishing.
Latest version: v1.0.2.
Note: We’re working on a simple GUI with an installer, to allow using Ace without having to deal with package managers and command line tools… stay tuned!