Calibre is an excellent softwares to load and read epub files. We can create a library using epub files.
However the drawback is it doesn’t have full text search.
Abode can create an index and provide a search. However looking for several features which Calibre has.
Does anyone know any good softwares which loads, read and search the entire PDF book. i.e full text search within seconds..may be 1 to 3 seconds and provide results.