On Oct 12 ONLYOFFICE announced that their desktop editors are going open source and the source code is available on Github. If you are keen to checkout the repository, https://github.com/ONLYOFFICE/.

I haven’t used the editors that much except for few files and they work well so far. If you are on Ubuntu OS it’s easy to install. I am on Ubuntu 16.04 right now and installation is based on 16.04, but from the repository page, it seems you will be fine with any Debian based OS. šŸ™‚

1st thing is we need to download the repository key. I would not download from their server, rather would obtain it from Ubuntu key server. Open terminal and type the following:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys CB2DE8E5

Now lets add the repository to sources.list:

sudo vim /etc/apt/sources.list

Add the following line to sources.list:

deb http://download.onlyoffice.com/repo/debian squeeze main

Save and close the vim editor by holding shift and double tap Z. Update the package manager cache by:

sudo apt update

Time to install:

sudo apt install onlyoffice-desktopeditors

After successful installation launch the editor from either the Dash launcher OR from terminal by typing, desktopeditors

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