Yes, there are several viable open source alternatives to the Google Office Suite.
One option is Apache OpenOffice, which is the leading open source office suite. It is a full-featured office suite that is compatible with Microsoft and other major office productivity suites. OpenOffice includes Writer (word processing), Calc (spreadsheets), Impress (presentations), Base (database), Draw (vector graphics, flowcharts, etc.), Math (equation editing) and more. It is an excellent alternative for users looking for an open source version of a desktop office suite.
Another popular open source alternative to Google Office is LibreOffice. It is a free and open source office suite that is also compatible with Microsoft and other major office productivity suites. It includes features like Word Processing, Spreadsheet, Presentation software, Database, Vector Graphics, and Formula Tool.
Finally, there are some open source suites that are specific to certain tasks. For example, if you’re looking for an open source alternative to Google Docs, then you may want to check out Etherpad. It is an open source collaborative document editor that supports real-time editing. It’s perfect for teams, classrooms, and situations where multiple users need to collaborate on documents.
All of these open source alternatives to the Google Office suite offer great features, compatibility with other office suites, and are free and open source. So, whichever one you decide to go with, it is sure to offer a great experience for users.