Open source collaboration software vendor Open-Xchange has added a spreadsheet function to its open-source, web-based productivity suite, allowing the online editing and sharing of Microsoft Excel ...

My first vibe-coded app turned out to be more useful than I had envisioned.

Free spreadsheet apps are a cool idea, as long as you’re comfortable with their limitations. Many are ad-supported, for instance, so expect part of your screen to be trying to sell you something.

LibreOffice is a free and open-source alternative to Microsoft 365 and includes similar apps and features. It's compatible with Word, Excel, and PowerPoint formats, so everyone can access your files.