Okular - Okular is a universal document viewer based developed by KDE.

Parascript - Parascript is an AI-powered Intelligent Document Processing software that makes it possible for you to automate the extraction of data from any type of document, whether it’s a contract, a form, or an invoice.

Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.

UiPath Document Understanding - UiPath Document Understanding is an AI-driven platform that you can use for extracting data and its interpretation that helps businesses make better decisions by unlocking the value hidden in unstructured data.

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

ABBYY Vantage - ABBYY Vantage is an Intelligent Document Processing (IDP) platform that enables the digital workforce to automate the entire document processing cycle from data capture and analysis to document creation and sharing.