calibre vs Nitro PDF Reader

A side-by-side look at calibre and Nitro PDF Reader. For an in-depth review of either product, follow the links below.

calibre

Education & Reference

Calibre is a free and open-source e-book computer software application suite which runs on multiple platforms, allows users to manage e-book collections as well as create, edit, and read e-books. It supports a variety of e-book formats.

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Nitro PDF Reader

Office & Productivity

Nitro PDF Reader is a free PDF viewer and editor that allows you to view, create, convert, edit, and sign PDF files. It has basic editing features like adding or removing pages, merging PDFs, adding text, comments or stamps, as well as more advanced features like OCR and batch conversion.

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