OnlyOffice

OnlyOffice is a productivity suite developed by Ascensio System SIA, headquartered in Riga, Latvia. It includes web, desktop and mobile editors for documents, spreadsheets, presentations, PDFs and forms, plus a collaboration platform with mail, CRM, projects and calendar, with full support for OOXML and ODF formats, comments, version history and AI assistants. OnlyOffice is offered as an open-source Community Edition (AGPL-3.0), a commercial Enterprise Edition and a hosted Workspace, and is used by French government bodies among others. Desktop and mobile apps are free.