Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.

genei.io - AI-generated summaries for any article or research paper.

PDFZen - The powerful, simple, free online PDF editor for the masses; free yourself from the fax machine!

RadaeePDF - RadaeePDF is a library for developers who want to render, manipulate, annotate PDF files on Android, iOS and Windows.

Xodo - Try easy-to-use PDF tools that keep your documents safe. Work with your important files across all platforms and devices with the ultimate all-in-one document solution. Your productivity lives at Xodo!

Lumin PDF - Lumin is a fast, easy-to-use, and secure PDF viewer, editor, and sharer that lets you view and fill in PDF forms.