• Files
  • Calendar
  • Contacts
  • E-mail


You can use Thunerbird with the lightning extention to synchronize e-mail, contacts and calendars with IMAP, CardDAV and CalDAV.

Walkthrough guide coming soon…


The Group-Office Assistant is a small program that you can install on your Windows, MacOS or Linux computer. It will automatically download files opened from Group-Office and monitor it for changes. When the file is saved it automatically uploads it back to Group-Office.


On Debian based distributions you can install the Group Office Assistant.

  1. First add our APT repository:

    echo "deb one main" | sudo tee /etc/apt/sources.list.d/groupoffice-assistant.list
  2. Add our public key:

    gpg --keyserver --recv-keys 0758838B
    gpg --export --armor 0758838B | sudo apt-key add -
  3. Update APT:

    sudo apt-get update
  4. Then install Group Office Assistant by running:

    sudo apt-get install groupoffice-assistant
  5. Now double click a file in Group Office and it can be edited on your desktop instantly.


For Chrome users. You might be annoyed by the popup dialog everytime you open a file. Here’s a solution for that: