PDFDad vs Qiqqa
A side-by-side look at PDFDad and Qiqqa. For an in-depth review of either product, follow the links below.
PDFDad
Office & Productivity
PDFDad is free PDF editing software for Windows that allows you to edit, annotate, convert, and sign PDF documents. It has basic features like adding text, highlighting, inserting images and shapes, as well as more advanced options like redacting text and merging PDFs.
pdfeditorannotateconvertsignfree
Qiqqa
Education & Reference
Qiqqa is a free reference management software that helps researchers organize, manage and cite their references. It integrates with web browsers to capture references, has features like automatic metadata lookup and attachments support, and offers a clean, intuitive interface to manage references.
reference-managementcitation-managementresearch-organization