Calibre Portable

This software allows you to edit the metadata for e-books such as Title, Author, ISBN, Date Published, Cover Art, and what format of e-book file it is (epub, mobi, azw3, fb2, htmlz, lit, pdb, pdf).

This software also allows you to search for e-books through the program's built-in browser. This software also allows you to change the font of your e-books. You may also read your e-books right inside the program.

Calibre Portable is easy to install and does not take up much storage. It is easy to use, even without instructions.

This is the only software that allows you to edit the main features of e-books.

There are no ads or pop-ups that come with this program. You will find no other software that can edit the metadata of e-books. When editing metadata, just click in the box you want to edit the info for and type in the info you want it to say, and then click 'save'. Then, pick the format you want (if the format is not already the one you want), and click 'convert'. Make sure you save the file to your computer which can be done on the main interface by clicking 'save file'. Choose the location you want your file to be placed on your computer and save it there. If you now want to open this e-book into another reader, select within that reader the new file you just saved in the location you just saved it in. The e-book should show up in the reader exactly as you have pre-filled the metadata.

In conclusion, this program is free, lightweight, and has many many awesome features which no other program has for editing your e-books.