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1, libreoffice

LibreOffice is a powerful office software, the default use of OpenDocument Format (ODF), and support *.docx, *.xlsx, *.pptx and other formats. It includes Writer, Calc, Impress, Draw, Base, and Math components for processing text documents, spreadsheets, presentations, drawings, and formula editing. It runs on Windows, GNU/Linux, and macOS with a consistent user experience.

www.libreoffice.org/

github.com/LibreOffice

 

2, Apache openoffice

Microsoft Office is a free cross-platform Office software similar to Microsoft Office and WPS.

www.openoffice.org/

blog.open-office.es/draw/

 

3, Calligra

Office and graphic art suite by KDE

Calligra is a lightweight office component designed to provide excellent office software based on open standards for all platforms. In addition to the standard office software, this release adds Flow, a schematic and Flow diagram editor, and Braindump, a note-taking tool. Calligra is compatible with MS Office 2007 files. In addition, Calligra comes with drawing tools.

calligra.org/

Github.com/KDE/calligr…

 

4. Koffice

github.com/KDE/koffice

KOffice (renamed Calligra Suite) is a freely distributed integrated office Suite from KDE, which includes a word processor, spreadsheets, slideshow creation, project management and many more tools.

KOffice component, KOffice is based on KParts framework of KDE.

KWord — a frame-oriented word processor capable of processing professional-sized documents. KSpread — powerful spreadsheet program. KPresenter — a fully functional slideshow maker. Kivio — Visio® -like flowchart drawing program. Karbon14 — Vector drawing program. Krita — Pixel-based image processing program similar to The GIMP or Adobe© Photoshop®. Kugar — Business report generator. KChart — a comprehensive graphic chart drawing tool. KFormula – powerful formula editor. Kexi─ multifunctional database management environment.

 

5, drawing

Krita

krita.org/zh/

Invent.kde.org/graphics/kr…

invent.kde.org/graphics

Inkscape

inkscape.org/

Gitlab.com/inkscape/in…

Gitlab.com/inkscape/li…

Krita and Inkscape replace commercial software for Windows, Photoshop and Coreldraw, respectively.

 

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