cbr

SumatraPDF is a multi-format (PDF, EPUB, MOBI, CBZ, CBR, FB2, CHM, XPS, DjVu) reader for Windows.

MComix is a user-friendly, customizable image viewer.

Adds thumbnail preview to Windows Explorer for EPUB, FB2 and Kindle ebooks; CBZ, CBR, RAR and ZIP archives.

A free comic book archive format (*.cbr) file reader.