EBookDroid is a highly customizable document viewer for Android.
EBookDroid supports the following ebook and document formats: DjVU, PDF, XPS (OpenXPS), FictionBook (fb2 and fb2.zip), Comics Book formats (cbr and cbz), plus + starting with version 2.0 + EPUB and RTF.
+ Text selection and external dictionary support.
+ Text highlighting
+ Free+hand annotations.
+ Text notes and page notebooks.
Varies with device