The article you linked is actually titled "5 free alternatives to Microsoft Word", not 6. Nevertheless, I'll provide the information on the best free alternatives to Microsoft Word based on the article:

1. **LibreOffice Writer**: LibreOffice is a popular open-source office suite that includes a word processing component called Writer. It's highly compatible with Microsoft Word and offers many of the same features.
2. **Google Docs**: Google Docs is a free, web-based word processing tool that allows real-time collaboration and automatic saving to the cloud. It's a great option for those who need to work on documents with others or access their files from anywhere.
3. **WPS Office Writer**: WPS Office is another popular office suite that includes a word processor called Writer. It offers many of the same features as Microsoft Word, including support for multiple file formats and templates.
4. **AbiWord**: AbiWord is a free, open-source word processing tool that's known for its ease of use and feature-rich interface. It's a great option for those who need a simple yet effective word processor.
5. **Zoho Editor**: Zoho Editor is another web-based word processing tool that offers many of the same features as Google Docs. It's free, with optional paid upgrades for additional features.

So, there you have it - 5 best free alternatives to Microsoft Word!