LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
Collaborator - Система дистанційного навчання повного циклу із аналітикою в реальному часі та інструментами внутрішнього маркетингу.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Lessonly - Getting teams up-to-speed and keeping them there.