For example, StarOffice 9 was no longer free for educational customers ... distributions now use it as their default office suite. According to the LibreOffice letter, they’ve had 15,000 ...

LibreOffice offers a free, open-source alternative to Microsoft Office 365 with a familiar interface ... Luckily, many free software suites offer functionality similar to Microsoft 365 without ...

and Linux-based LibreOffice (Writer, Calc and Impress). All office suites are able to read Microsoft file formats. Each version has its own mix of apps, and one or more utilities may be included.