OnlyOffice (formerly TeamLab), stylized as ONLYOFFICE, is a free software office suite developed by Ascensio System SIA, a company headquartered in Riga, Latvia. It features online document editors, platform for document management, corporate communication, mail and project management tools. OnlyOffice is delivered either as SaaS or as an installation for deployment on a private network. Access to the system is provided through a private online portal.
a trade-free office suite. On their website are trackers and ads though (https://www.onlyoffice.com/) which is why I give 4/5 blocks.