Description: NightPDF is a free, open-source PDF editor and viewer for Windows. It provides basic PDF editing features like merging PDFs, adding or removing pages, rotating pages, reordering pages, splitting PDFs, encrypting/decrypting PDFs, and more.
Type: software
Pricing: Open Source
Description: Scopus is a large abstract and citation database of peer-reviewed literature. It covers scientific journals, books, and conference proceedings in the fields of science, technology, medicine, social sciences, arts, and humanities.
Type: software