Open source Office Suites tools
5 free, open source options sorted by GitHub stars.
Free alternatives to Microsoft Office
CryptPadSecure collaboration with end-to-end encryptionONLYOFFICE DocsComplete office suite for documents, spreadsheets & moreLibreOfficeFree office suite with Microsoft compatibilityIronCalc A spreadsheet engine you can embed, self-host, or run in the browserCollabora OnlineOpen-source document editing suite for secure collaboration