Foliate is an open-source eBook reader for Linux that supports various file formats, including EPUB, Mobipocket, and PDF. It offers features such as adjustable font, spacing, and color scheme, as well as navigation tools like a table of contents and reading progress slider. The reader also allows for bookmarking and annotating, with data stored in plain JSON files for easy export or syncing. Foliate is available for installation on several Linux distributions, including Arch Linux, Debian, and Fedora.