Open Source Alternatives to Microsoft 365

A cloud-based office suite that provides Word, Excel, PowerPoint, Outlook and Teams, with AI-driven Copilot assistance for creating, analyzing and collaborating on documents, presentations and data.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Microsoft 365 give you an option you fully own. They run locally on your own device, so your data never leaves your machine. This page lists 1 open source alternative to Microsoft 365. The most popular is LibreOffice. It uses the GPL-3.0 license.