MangaDex - MangaDex is an online manga reader that caters to all languages.
Mihon - Free and open source manga reader for Android
Manga Effect - Manga Reading, manhwa and manhua online, the fastest updates. Mangaeffect is a colour Manga Read in English for free. Daily Updates!
Houdoku - Manga reader and library manager for the desktop
EbookRenta - Read over 6000 manga titles wherever you are! 48-hour rentals starting from just $1! Professionally translated high quality manga delivered straight to your device!
Aniyomi - Aniyomi is an unofficial fork of the free and open source manga reader Tachiyomi that adds anime capabilities!