Okular - Okular is a universal document viewer based developed by KDE.
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Collaborator - Система дистанційного навчання повного циклу із аналітикою в реальному часі та інструментами внутрішнього маркетингу.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Lessonly - Getting teams up-to-speed and keeping them there.