PSA: Can we please not recommend OnlyOffice as an FOSS office application anymore? That software is a walking red flag.
OnlyOffice is de facto owned by JSC R7 – a russian company based in Nizhny Novgorod – which distributes OnlyOffice in Russia as R7-Office to government agencies and businesses. JSC R7 obfuscate the fact that they own OnlyOffice with multiple shell companies in different countries.
OnlyOffice falls under the sanctions against Russia.