This is an useful EPUB reader software:
1. view a EPUB , you can zoom in or out page
2. directory navigation, you can automatically open the last read page
3.flexible search capability, search in files
4.Command+Up or Down Arrow Page navigation
5.Scroll left or right with two fingers for Page navigation
6.Pinch with two fingers for zoom in or out page
7.share recent reading history with ios device via iCloud(Requires ios version App )
you can purchase iap: Batch Create Epub from txt/chm