Gnumeric
Verified working Sep 18, 2026
A lightweight open-source spreadsheet built for speed and accuracy.
Gnumeric is a free, open-source spreadsheet application with source code available under the GNU GPL. The project emphasizes quick startup, responsive handling of large workbooks, and reliable results from its built-in functions and analysis tools.
Why it stands out
- Calculation accuracy is a stated project focus and is supported by outside researcher findings cited by the project.
- Designed as a standalone spreadsheet rather than a full office-suite component, keeping the tool focused.
- Source code is freely available under GPL version 2 or 3 terms.
- Recent release news indicates the project is still maintained.
Good to know
- Focused on spreadsheets only, not a full office suite with word processing or presentations.
- Requires installing a desktop application rather than working as a browser-based collaborative spreadsheet.
- Support resources are community/project channels such as a manual, FAQ, mailing list, and bug tracker rather than commercial support.
Photos
Researchers and technical users who need dependable spreadsheet calculations without proprietary office software. Open large spreadsheet files on a responsive desktop application. Use a free spreadsheet tool where source code and licensing terms are transparent. Report bugs, follow releases, or participate through the project mailing list.
Desktop spreadsheet application; GPL-licensed source code; built-in spreadsheet functions and tools; quick startup and large-sheet handling; user manual, FAQ, mailing list, bug reporting, and regular release downloads.
Alternative listings
Self-hostable office editing for teams that need data control.
Open Source & Free Software AlternativesCollabora Online provides browser-based editing for text documents, spreadsheets, presentations, and drawings, with deployment options for self-hosted infrastructure or hosting through partners. It is built around open-source office technology and is positioned for organizations that want collaborative document editing without handing files to a large SaaS office provider.
0 votesVisit siteA practical roundup of office suites that can replace Microsoft 365.
Open Source & Free Software AlternativesTechRadar’s guide compares Microsoft Office alternatives for documents, spreadsheets, presentations, collaboration, and file compatibility. It summarizes options across pricing models, supported platforms, formats, features, and team workflows to help readers choose a productivity suite beyond Microsoft’s ecosystem.
0 votesVisit site
Similar sites elsewhere
- LibreOffice Calc — libreoffice.org
- Apache OpenOffice Calc — openoffice.org
- ONLYOFFICE Spreadsheet Editor — onlyoffice.com
1 of 5