OnlyOffice, developed by Ascensio System SIA, is a suite of online office tools that allows users to create, edit, and collaborate on text documents, spreadsheets, and presentations. This solution can be used via a web browser or deployed on a server for on-premises or hosted use. It supports a variety of popular file formats, including Microsoft Office, OpenDocument, PDF, and HTML. Available versions include the Community Edition, the OnlyOffice cloud service, and the OnlyOffice Docs Enterprise application.