Four applications, one installer
A single MSI, four desktop shortcuts. Each application carries its own accent colour and a tabbed toolbar that office users already know.
O3O Doc
Word processing. Opens and saves .docx, .doc, .odt, .rtf; PDF export, track changes, comments, mail merge, automatic tables of contents.
O3O Sheet
Spreadsheets. Opens and saves .xlsx, .xls, .ods, .csv; 500+ functions, pivot tables, charts, conditional formatting, drag-to-move columns.
O3O Slide
Presentations. Opens and saves .pptx, .ppt, .odp; layouts, masters, transitions, animations, presenter view, video export.
O3O PDF
View, annotate, fill forms, sign and edit PDF files; convert PDF to text or spreadsheet.
Screenshots
Why businesses choose O3O Office
Microsoft Office compatible
Saves .docx, .xlsx and .pptx by default. Documents exchanged with partners and authorities keep their layout; Calibri and Cambria compatible fonts included.
Vietnamese and 10 languages
Vietnamese interface by default; switch to English, Chinese, Japanese, Korean, French, German, Spanish, Russian or Portuguese from the toolbar.
Fleet deployment
Silent MSI installation through msiexec or Group Policy; file associations registered automatically; background preloading for instant start; automatic updates from office.o3o.vn.
Transparent licensing
Pay by bank QR code and activate within seconds. Licence certificate and invoice download inside the application; public verification at office.o3o.vn/xac-thuc.
Your data stays on site
Documents are processed on the workstation only. Nothing is uploaded to any server, which suits organisations with internal confidentiality rules.
Local support
The o3o.vn team answers during business hours by hotline 0888 787 980, e-mail and the feedback page; contract customers get a dedicated channel.
Pricing
Public list prices, refreshed live from the licensing system. Prices include applicable taxes.
Free
- Full O3O Doc, Sheet, Slide, PDF
- Shows an ad at start-up, skippable after 10 s
- Automatic updates
1-year plan
Billed 180.000 ₫ for 12 months
- No ads
- Updates and priority support for 12 months
- 1 computer, transferable at any time
- Certificate and e-invoice
Lifetime
- No ads, perpetual use
- Updates for 3 years
- 1 computer, transferable at any time
- Certificate and e-invoice
Organisations with 10 or more computers: see the enterprise programme or call 0888 787 980 for a quotation.
Forty years of heritage
O3O Office descends from the office suite line that began in 1985 with StarOffice, was open-sourced by Sun Microsystems in 2000 as OpenOffice.org, and has been developed continuously by an international community under the MPL/LGPL licences. o3o.vn rebuilt the interface, localised it, added the licensing system and maintains the product in Vietnam.
- 1985 · StarOfficeStarDivision (Lüneburg, Germany) releases StarWriter, the origin of the StarOffice suite.
- 2000 · OpenOffice.orgSun Microsystems publishes the full StarOffice source code under an open-source licence.
- 2005 · OpenDocumentThe Open Document Format becomes an OASIS standard, later ISO/IEC 26300.
- 2026 · O3O Officeo3o.vn releases O3O Office for Vietnamese businesses: four applications, Vietnamese UI, bank-QR licensing.
Release notes and full timeline
Ready to roll out?
Download the free edition to evaluate, or contact us for a quotation by seat count and deployment support.