The best open source alternative to Excel Online is LibreOffice - Calc. If that doesn't suit you, our users have ranked more than 50 alternatives to Excel Online and 16 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Excel Online are Proton Sheets, IronCalc, EtherCalc and Gnumeric.
LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.org Calc, professional data miners and number crunchers will appreciate its comprehensive range of advanced functions.
End-to-end encrypted spreadsheets enabling secure business data management, real-time collaboration with access controls, data analysis with automatic functions and visual tools, integration with cloud storage, and cross-device workspace access for teams.
The democratization of spreadsheets. Empowering everyone with advanced, open-source spreadsheet solutions.
EtherCalc is a web spreadsheet. Your data is saved on the web, and people can edit the same document at the same time. Everybody's changes are instantly reflected on all screens. Work together on inventories, survey forms, list management, brainstorming sessions and more!
The Gnumeric spreadsheet is part of the GNOME desktop environment: a project to create a free, user friendly desktop environment.
Calc, part of the Apache OpenOffice suite, is a spreadsheet application. It is similar to Microsoft Excel , with a roughly equivalent range of features.
NeoOffice is an office suite for Mac that is based on OpenOffice and LibreOffice. With NeoOffice, you can view, edit, and save OpenOffice documents, LibreOffice documents, and simple Microsoft Word, Excel, and PowerPoint documents.
SC-IM - Spreadsheet Calculator Improvised – An ncurses spreadsheet program for the terminal.
mtCellEdit is a lightweight spreadsheet program. It is a small, no frills program which is designed to handle simple day to day spreadsheet tasks.
MS-365-Electron streamlines your workflow by offering a dedicated desktop interface for the free, web-based version of Microsoft 365. Think of it as a convenient launchpad for web applications like Word, Excel, and PowerPoint, eliminating the need to navigate through browser...
SolidSheets offers a user-friendly interface and powerful features to manage and analyze your data. Easily open, edit, and print CSV, SSFS/SSFS64, and XLSX files. With advanced formulas, charts, and machine learning algorithms, accelerate your workflow.
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The only functionality that can't be replaced is the online collaboration - but is also in plan