2 Free and Open-source Spreadsheet Apps for macOS (Intel and Apple Silicon)

1- LibreOffice

an open-source Office Suite

LibreOffice is an open-source office suite alternative to commercial office suites such as Microsoft Office, Apple Office apps, and OnlyOffice.

It is the successor to OpenOffice.org suite, the primary office suite for many Linux distros.

LibreOffice is compatible with a wide range of document formats such as Microsoft® Word (.doc, .docx), Excel (.xls, .xlsx), PowerPoint (.ppt, .pptx), and Publisher. But LibreOffice goes much further with its native support for a modern and open standard, the Open Document Format (ODF). With LibreOffice, you have maximum control over your data and content – and you can export your work in many formats including PDF.

LibreOffice Primary apps

LibreOffice suite is consisting of several apps that make its user not require any apps outside their app scope.

Read about LibreOffice 's features, license, platforms, and more.

2- TreeSheets

Free Form Data Organizer

TreeSheets is a free open-source data organizer.

A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.

Suitable for any kind of data organization, such as todo lists, calendars, project management, brainstorming, organizing ideas, planning, requirements gathering, presentation of information, etc.

It's like a spreadsheet, immediately familiar, but much more suitable for complex data because it's hierarchical.

It's like a mind mapper, but more organized and compact.

It's like an outliner, but in more than one dimension.

It's like a text editor, but with structure.

Read about TreeSheets 's features, license, platforms, and more.