This software considers itself a library manager as well as an electronic book reader. A wide range of formats are supported including PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR. Large collection of plug-ins to help customize your E reader. Books and journal articles can be customize with colors, fonts, spacing, text to audio functions is available.
This is available for Android, Mac OS, and Windows platforms. It opens the following documents: CHM, LIT, PDF, ePub, MOBI, DjVU, HTML, and RTF. FBReader includes numerous plug-ins to help with individualization of content access.
SumatraPDF opens any of the following documents: PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows. It's good for customizing the look of the book pages, including colors, filters, and font. There is no text to audio support within the program.