Joeffice | Open Source Java Office Suite for Windows, macOS and Linux

Open Source (Apache)

Java

MS Office File Format

No Account needed

Free

Windows, macOS and Linux

Word/Excel/Powerpoint file support
Docking documents system
Dark mode support
Embeddable in other Java software
Runs on Windows, macOS and Linux
Open Source with Apache License

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Latest changes, License

Joeffice screenshot

Features

Word Processor (.docx files)
Spreadsheet / Excel (.xsl, xslx files)
CSV (.csv files)
Presentation / Powerpoint (.pptx files)
Graphics (.svg files)
Database (.h2 files)

View documents
Edit documents
Transform content

Open Source with permissive license (Apache License 2.0)
Same window for all your documents
Tabs and docking system to show documents
Dark mode available
written in Java

You can change of skin of the application, including some dark themes.
Run the application inside your Java IDE using Applet Runner plug-in.
Save your preferences in different .ini files.
Keep the application window always on top of other applications.
Renders the application window translucent.
You can run it on Windows, macOS, Linux and (not tested) others operating systems that have Java.

Screenshots

Click on the image to enlarge it

Joeffice Window Docking System

Joeffice in Dark Mode

Joeffice Word Processor

Joeffice Spreadsheet

Joeffice Presentation

Joeffice Database