Adobe Acrobat (Pro) DC is the successor of former Adobe Acrobat XI Pro. There is no need to repeat its feature details. Just at the requests of so many visitors, AppNee will continuously release, update Adobe Acrobat Pro DC Portable version in this post. For details please see the following "Edition Statement" part!
The best solution for document unreadable codes and format incompatibilities is to convert the document format. Universal Document Converter enables users to convert any document format to the most popular and common, editable PDF or various image formats that can be viewed anywhere. So that you can read or print any complex or unsupported document format from other computers with ease.
On many users' computer, it's probably that an EPUB (mobile-specific ebook format) reader is not installed at all. In that case, what we first think of is to convert it to the most commonly used and universal format for almost any device - PDF, therefore we still need some tool to help.
Nuance OmniPage Ultimate owns superior OCR recognition accuracy and complete, perfect formatting, allows to capture text with a digital camera, works well with any scanner and office applications. Plus, it supports efficient batch processing, has built-in automatic redaction and highlight feature and can recognize 120+ languages.
LibreOffice is a derived version of OpenOffice Office suite, is freeware and open source as well (compared with the expensive MS Office, this is absolutely its biggest advantage), but in comparison wih OpenOffice, it has increased a lot of notable features (just because of LibreOffice, the OpenOffice.org official support has stopped).