# Open Source Alternative to Microsoft Office

Open source alternatives · Office

Microsoft 365 costs US$99.99 a year. LibreOffice is a complete office suite that opens your files, free.

**What the paid app costs:** US$99.99/yr

## Why switch?

Documents, spreadsheets, and presentations are solved problems. LibreOffice has matched Office's core features for over a decade, works fully offline, and never nags you to renew. OnlyOffice is the pick when pixel-perfect DOCX compatibility matters.

## Compare the alternatives

AlternativeLicensePlatformsBest for[LibreOffice](https://www.libreoffice.org/)MPL-2.0Windows, macOS, LinuxThe full free office suite[OnlyOffice](https://www.onlyoffice.com/)AGPL-3.0Windows, macOS, Linux, webFor perfect Office file compatibility

### [LibreOffice](https://www.libreoffice.org/)

Free forever MPL-2.0 · Windows, macOS, Linux

- Writer, Calc, Impress included
- Opens DOCX, XLSX, PPTX
- No account, works offline

**The full free office suite**

[Official site →](https://www.libreoffice.org/)

### [OnlyOffice](https://www.onlyoffice.com/)

Free forever AGPL-3.0 · Windows, macOS, Linux, web

- Best MS format compatibility
- Clean modern interface
- Collaborative editing

**For perfect Office file compatibility**

[Official site →](https://www.onlyoffice.com/)

## Which one should you pick?

- **LibreOffice:** The full free office suite
- **OnlyOffice:** For perfect Office file compatibility

## Frequently asked questions

### Will my Word documents open correctly?

Yes, LibreOffice and OnlyOffice open DOCX, XLSX, and PPTX. OnlyOffice preserves complex formatting best.

### Can I collaborate like Google Docs?

OnlyOffice supports real-time collaborative editing, self-hosted or on their cloud.

### Is LibreOffice really free for business?

Yes, MPL-2.0 licensed, free for commercial use with no user limits.

## More open source alternatives

- [Google Docs](/open-source-alternative-to-google-docs/)
- [DocuSign](/open-source-alternative-to-docusign/)

[← All open source alternatives](/open-source-alternatives/)