It's False: Those Are Not Alternatives to LibreOffice. They're Proprietary or Not Maintained.
Not the first time, either: It's Not FOSS, It's Microsoft Spyware, It's Not FOSS, Not Even Remotely, and Microsoft Uses It to Spy on Users
THE site "It's FOSS" suggests alternatives to FOSS. At least half of those alternatives are NOT FOSS, so why bother? █