The software ecosystem for businesses in Vietnam

O3O delivers a unified toolset: office productivity, online meetings, file storage, e-mail and single sign-on. Sovereign infrastructure, data kept in Vietnam, local support, transparent licensing.

Download O3O OfficeOpen O3O Meet
One O3O ID account for everything · Enterprise hotline 0888 787 980

Five services, one account

Each service works on its own and connects to the others through O3O ID. Organisations can start with one and expand over time.

office.o3o.vn

O3O Office

Available

Office suite for Windows: O3O Doc, Sheet, Slide, PDF. Microsoft Office compatible, Vietnamese interface, transparent licensing.

Learn more →
meet.o3o.vn

O3O Meet

In operation

Meetings and online classrooms on your own infrastructure: WebRTC, real-time annotation, recording, waiting room, attendance, admin.

Learn more →
cloud.o3o.vn

O3O Cloud

In operation

File storage and sync for organisations: folder permissions, sharing, Windows, Android and iOS apps, per-user quotas.

Learn more →
mail.o3o.vn

O3O Mail

Coming soon

Business e-mail on your own domain, shared calendar and contacts, spam protection, hosted in Vietnam.

id.o3o.vn

O3O ID

In operation

One account for every O3O service: single sign-on (OpenID Connect), two-factor authentication, central user management.

Learn more →
O3O Office · office.o3o.vn

An office suite for every workstation

O3O Doc, O3O Sheet, O3O Slide and O3O PDF in one Windows installer. Opens and saves .docx, .xlsx, .pptx and .pdf natively; Vietnamese interface by default plus nine more languages.

  • Full-featured free edition; 1-year plan at 15,000 ₫/month billed for 12 months, or lifetime at 799,000 ₫, activated automatically by bank QR.
  • Licence certificate and invoice downloadable inside the application; public verification.
  • Silent MSI and Group Policy deployment; file associations registered automatically; automatic updates.
  • Built on the StarOffice (1985) and OpenOffice.org heritage, maintained by o3o.vn in Vietnam.
Explore O3O OfficeEnterprise deployment
O3O Doc
O3O Meet · meet.o3o.vn

Meetings and classrooms on your own infrastructure

A WebRTC meeting platform that runs on your organisation's servers: no dependency on foreign services, no time limits, recordings and data stay inside your systems.

  • High-quality video and audio; media servers located in Vietnam for low latency.
  • Real-time annotation over slides and shared screens; Windows app for hosts; Chrome extension.
  • Waiting room, attendance, recording, raise hand, chat, room lock; admin console and per-installation licences.
  • One-line installation on Ubuntu servers with automatic HTTPS; sign in with O3O ID or your own SSO.
Open O3O MeetSelf-host guide
Phòng họp · Ban điều hành
Chủ trì
Kế toán
Kinh doanh
Nhân sự
Chi nhánh HN
Chi nhánh HCM
🎙 Mic📷 Camera🖥 Chia sẻ✏ Vẽ⏺ Ghi hình🙋 Giơ tay✔ Điểm danh

Why businesses choose O3O

Sovereign infrastructure

Every service can run on servers operated by o3o in Vietnam or on your organisation's own servers.

Data stays in country

Documents, meeting recordings, stored files and user identities never leave your systems.

One identity

O3O ID (OpenID Connect) signs in to every service and integrates with your existing identity provider.

Transparent cost

Public list prices, electronic invoices, licence certificates, no hidden per-user fees.

Local support

A team in Vietnam during business hours; contract customers get a dedicated channel and response commitments.

Proven open foundations

Built on widely used open-source components, version-pinned and tested before every release.

Talk to O3O about your organisation

Send us your user count and the services you need; we reply within one business day.

office@o3o.vnHotline 0888 787 980