Euro-Office, ONLYOFFICE, and their licensing dispute

Euro-Office, a new open-source office suite initiative led by Nextcloud and IONOS, forked ONLYOFFICE (licensed under AGPLv3) and removed ONLYOFFICE's additional license terms requiring logo retention. ONLYOFFICE claims these terms are valid under AGPLv3 Section 7(b) and (e), while Euro-Office and the Free Software Foundation argue that logos do not qualify as 'legal notices or author attributions' under Section 7(b), making the logo retention requirement an impermissible further restriction. ONLYOFFICE has issued a formal notice of copyright violation, suspended its partnership with Nextcloud, and invited FSF arbitration. The FSF's published position largely supports Euro-Office's interpretation. The dispute raises broader questions about open source business sustainability and whether ONLYOFFICE might eventually relicense to a proprietary model.